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Twitter has no doubt changed how we think about real-time messaging. Twitter has given users a new platform upon which to "chat" - through posting messages, through targeted, but public @-messages and through private DMs. But "chat" doesn't quite describe what people do on Twitter. And no doubt, Twitter doesn't quite work seamlessly as a traditional chat client.

There's the character limitation, of course. There're the restrictions on DMing those who don't follow you. And if you have email notifications set up, there's the annoying influx in your inbox when you try to hold a conversation via direct message.

A new service launching today aims to leverage your Twitter network in order to build a better instant messaging platform. Joint lets you chat with those in your Twitter network - but it doesn't use Twitter to do so.

In its heyday, ICQ was one of the most popular instant messaging networks. Today, you will probably have a hard time finding your friends on ICQ. Nevertheless, almost two year after the release of ICQ 6, ICQ just released a new version of its IM client. ICQ 7 now integrates updates from Twitter, Facebook, Digg, Delicious, Flickr and YouTube. ICQ plans to add support for more social networks in the near future.

ICQ 7 is only available for Windows. Mac users can rest assured that they are not missing out on much.

Social networking site MySpace has just launched a new version of their mobile website designed for iPhone, Android and Palm WebOS users. The now-improved site at m.myspace.com offers quick access to your profile, including comments, your activity stream, your status, your inbox and more. Also available is a button dedicated to your photos, which makes it easier to browse through your albums. However, the most notable of the new features is the built-in instant-messaging function which makes the new mobile website a communication tool in addition to being just another social-networking app.

Nearly three years ago, internet users were buzzing about the upcoming new version of the multi-network instant messaging program from Trillian, a software application that would be called "Astra." But as time went on, Trillian just couldn't deliver. Eventually, we all moved on...to Digsby, to Meebo, and to plain ol' Google Talk, which we could easily access from our email inboxes.

Zoho, the web office company that competes with Google's online tools (and does so quite well), has introduced a new feature to their online suite of productivity applications: Zoho Chat 2.0. Built atop the original Zoho Chat platform, this iteration now integrates all the major instant messaging networks. But a multi-protocol IM client is not the big news - it's the fact that Zoho Chat 2.0 is integrated within the majority of the company's applications to allow for real-time collaboration with colleagues.

"Hey check out this video! http://tinyurl.com/xyz,"; says an old friend by Google Talk IM. Well sure, you think, I'd love to see a video from you - it's been a long time! Maybe you got an IM like that this afternoon, too. Maybe you got six.

There's nothing wrong with clicking on such a link, but when the site that loads as a result, Viddyho.com, asks for your Google Talk username and password in order to view the video - then you should know that trouble is afoot. Surprisingly, a whole lot of tech savvy people fell for it today. Update: The Harvard Crimson says it has unearthed the person responsible for the Viddyho worm.

The cyn.in desktop client from a company called Cynapse is a new application that brings microblogging to the corporate desktop. Powered by Adobe AIR, the client is intended to improve collaboration between teams through its real-time "Activity Stream" of events which makes communication quick and easy.