Update: There was a mistake in Sysomos' report. Twitter.com's share actually grew slightly from 45.7% in June to 46.7%. We apologize for the confusion.

Compared to Sysomos' last study of Twitter clients in June, Twitter.com's share fell from 55% to 46%. As Twitter's growth is slowing down, these numbers make a lot of sense. New users tend to use Twitter's web interface at first and then migrate to a third-party client. If Twitter.com's market share among Twitter clients is dropping, then this can be seen as a strong indication that the number of new signups is going down as well.

TweetDeck: The Client of Choice for Active Twitter Users

TweetDeck doesn't just have the largest number of users, it is also the tool of choice for the most active Twitter users. Sysomos analyzed the number of tweets posted by active users based on their primary Twitter application. On average, TweetDeck users send out 1.24 tweets per day, followed by Seesmic users (1.18 tweets/day) and HootSuite (1.11 tweets/day). Users of all the other popular clients like Tweetie, Twhirl and Twitterific update their status less than once a day. Those who prefer Twitter's own web interface only send out 0.67 tweets per day.

How Many Clients Do You Use?

Sysomos also analyzed how many third-party clients Twitter users normally use. Looking at active Twitter users only - those with at least 50 tweets in the last 5 months - the study found that 82% only used a single application. 14% used two applications, 2.35% used three and then the numbers drop off quickly. Only 0.01% of all active users used 6 or more clients. Chances are that a lot of active users use different mobile and desktop clients (Tweetie on the iPhone and Seesmic on the desktop, for example). This would explain why quite a large number of users use two clients.

We used the Twitter API to monitor the public feed and capture data on 37,248 tweets over a 24 hour period. We had usable data after about 2 hours, but wanted to let the program run overnight to remove any geographic biases due to timezones. It is interesting to note, though, that the top ten results basically didn't change after the first couple of hours -- though a couple of services swapped positions. That suggests that for the most part, people probably interact with Twitter in the same methods on either end of the globe.

Because we ran our script on a shared host, we limited our script to running at 60 second intervals and grabbed the 20 tweets listed in the public feed every 60 seconds. Since there many have been more than 20 tweets each minute we probably missed a handful of them (if there were less than 20, we only grabbed the new ones). Even so, our 37k is enough data to draw conclusions from.

The script that we used to do this was created for us by developer Kelli Shaver, who also compiled the data for the PDF report linked to later in this post.

The Results

Let's get right down to it. One trend that carried over from our November sampling, was that the web continues to be the #1 way in which people post to Twitter. It accounted for 56% of all tweets that we recorded. IM and txt (SMS message), which were also popular in November, remained popular, accounting for 8% and 5% of all tweets respectively.

But that's where the similarities end. Twitterific, which once ruled Twitter alone as the most popular 3rd party client, suddenly has company at the top. Twhirl now serves slightly more tweets than Twitterific, though both account for about 7% of the total. Snitter, which we found served 4% of tweets last November, has fallen out of favor and is now just the 15th most popular method of interacting with the service; it accounts for less than 1% of the tweets we recorded.

Below is the a list of the top 20 ways we saw people tweet and a graph showing the Twittersphere share of the top 10 post methods:

1. Web 56% (20734)
2. IM 8% (2975)
3. Twhirl 7% (2754)
4. Twitterrific 7% (2462)
5. TXT 5% (1683)
6. Twit 3% (1182)
7. TwitterFox 2% (1114)
8. movatwitter 2% (718)
9. P3:PeraPeraPrv 1% (459)
10. Netvibes 1% (266)
11. TwitBin 1% (260)
12. Twitter Tools 1% (222)
13. TwitterPod 0% (159)
14. TwitterIrcGateway 0% (152)
15. Snitter 0% (147)
16. BeTwittered 0% (106)
17. Tweetr 0% (95)
18. NatsuLion 0% (84)
19. Facebook 0% (79)
20. PocketTweets 0% (70)

Key Takeaways

Some of the main things we learned from this study:

• Twitter.com is good enough for the majority of Twitter users. Though clearly the API has enriched the service (142 different post services identified in 24 hours! -- and that doesn't include non-client uses of the API such as the polling startups we covered yesterday), the service is still bringing the majority of its users to its site. That potentially bodes well for some type of ad based monetization down the road.
• Twitter users are early adopters (that's not something we learned from this study, but something we already knew anecdotally), and early adopters are also often iPhone users. It's probably important to note that unless you're using an iPhone specific Twitter client like PocketTweets or iTweet from your iPhone, those tweets are counted under "web."
• For all the press that FriendFeed got last week for allowing people to post replies directly to Twitter, it was still 65th on our list and registered barely a fraction of total tweeting activity. Some analysts think FriendFeed is a threat to Twitter's existence, but remember that 56% of users still interact with Twitter on the main site, and Twitter makes up 44% of activity on FriendFeed. So which service is really more reliant on the other?
• There are a ton of Twitter clients out there. We saw 142 different ways to interact with Twitter in just 24 hours of monitoring the site's public feed. That's an amazing amount of activity on their API, and their application ecosystem is growing every day. Clearly, Twitter has struck a nerve with developers and users alike.
• We saw a large number of foreign language clients that we didn't see in November (especially from Asian countries). This is most likely due to that fact that we monitored the public feed this time around, while in November we looked at tweets from the contacts of just a handful of users -- and thus had an unavoidable language bias built in.
• We also saw a growth in posting from non-client outside sources such as Facebook, Netvibes, and yes, FriendFeed.

You can download our raw data (the full list of post methods that we logged) here (PDF).

What else do you think these stats tell us? How do you post to Twitter? Let us know in the comments below.

Patrick Ruffini over at TechPresident thinks this could be the year of Twitter. He cites downtime that Twitter recently experience when two major news events overloaded the service, Macworld and the US State of the Union address, as evidence of the service's potential mainstream appeal. "While these spikes reveal some troubling capacity issues that Twitter will need to deal with, this is the surest sign that the service has gone mainstream in a way not anticipated by its founders," writes Ruffini.

Twitter is fast becoming a serious platform for discourse and discussion. More than a status app, it is being used as a first alert mechanism for the dissemination of news and for immediate discussion surrounding that news. It is the coverage of news events and the continued emergence of citizen journalism that will push Twitter toward the mainstream this year.

Why Twitter Works for News

It's fast. Increasingly mainstream news reporters and bloggers are utilizing Twitter to put up news tid bits as they happen, and commentary as it pops into their heads. For example, Ana Marie Cox, the Washington Editor of Time.com, maintains a Twitter account that is both informative and hilarious. As we recently reported John Dickerson, a political correspondent for Slate, uses Twitter to report from the US presidential campaign trail in near real-time. "It is much more authentic, because it really is from inside the room," says Dickerson of Twitter, which has a visceral nature that reporters are beginning to embrace.

It's open. By embracing an open API architecture from the start, Twitter has smartly nourished a large set of tools that help people use the service. This makes it easier for people to get content on Twitter in the manner most convenient and most comfortable to them, which in the long run should help drive adoption of the service. "The API has been arguably the most important, or maybe even inarguably, the most important thing we've done with Twitter," Twitter co-founder Biz Stone told us in September.

The API has also allowed for mashups that filter Twitter content making it easier to find. One relevant Twitter aggregator is Politweets (our coverage), which brings together all the messages sent over Twitter about the US election.

It's two-way. Unlike TV or newspaper, Twitter allows for a conversation. Like its new media brethren, blogs, Twitter encourages discourse and feedback. For reporters that aren't afraid to get down and dirty, Twitter is a golden opportunity to build a rapport with readers and gauge public opinion. It also makes readers feel more connected to the news when they can participate in a discussion about it as it happens, often times with the people reporting it first hand.

It fills a void. As Ruffini points out, Twitter is built for the new news cycle. "Traditional news operated on a 24-hour cycle. Blogs shortened this to minutes and hours. Twitter shortens it further to seconds," he writes. "It's not right for every piece of information. It's certainly not well suited for longer analysis. But when it comes to instantly assembling raw data from several sources that then go into fully baked news stories, nothing beats it."

Some Hurdles to Twitter Discourse

Sometimes, it's too fast. Twitter happens in moments. If you think keeping up with the blogging cycle at big blogs like Engadget is tough, then keeping up with a thousand voices on Twitter is damn near impossible. For the tech-obsessed -- the people like you and I who are on their computers all day already -- keeping tabs on Twitter could easily become part of the routine. But for the mainstream audience, Twitter might need better filtering tools before people can really wrap their heads around it.

Third-party clients like Twitterific can help filter to a certain extent, but they're not perfect.

It can be muddled. One of the strengths of Twitter is that it is a two-way street -- you an talk back to the people who are talking to you. But it's not threaded, so replies get shuffled around and often times, out of context, just become confusing. Further, when everyone is having a conversation at once, things get noisy. Twitter desperately needs a filter.

One recent attempt is Tweetmeme, a Twitter memetracker based on the concept of Techmeme. It works relatively well at figuring out what people are linking to on Twitter, but isn't well suited to figuring out what people are talking about, and separating out those individual discussions (plus, it doesn't filter for language, which can make it a bit confusing if you're not multi-lingual).

It's hard to navigate. There is a learning curve to Twitter. Finding people isn't as easy as it should be (certainly not as easy as on mainstream social networks like MySpace or Facebook, which people are used to), and figuring out who to follow to get involved in the conversations you want to take part in requires some work as well.

Conclusion

Despite some potential hurdles, Twitter is being used more and more for mainstream news coverage. KPBS News San Diego uses Twitter to put out updates about stories, for example, and during the California wildfires last fall it was a must read. The potential for Twitter to be used for news dissemination is something the site's founders realized early on during an earthquake.

With citizen journalism on the rise, it seems likely that Twitter will become an increasingly more important point for the distribution of breaking news during 2008, to the extent that traditional journalists will begin to pay more and more attention to it the way they have to blogs. Twitter won't replace blogging or newspapers, but as Ruffini says, it "open sources the process of developing ideas and gathering news tips, giving us a complete window onto the news cycle."