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We've written earlier about Grovo, an online video e-learning site that conducts a lot of celebrity interviews. Some of them are more interesting than others. Today they have a new series with Zach Ciperski, the Director of SEO for EliteSEM and also serves as Vice President of CoffeeForLess.com. He has built sites for some major retailers and teaches SEO at New York University, among other places. His series is on How To SEO, and is worth watching if you are still struggling with the basics, or need some help before you go forth and try to hire an SEO specialist. Here is one five-minute segment on making small tweaks to your site.

It's called "Developer Preview" for a reason: Microsoft wants professional developers to be the first to see its design motif for Windows 8, and the first to start giving feedback before the rest of the world jumps in. Perhaps fortunately, perhaps unfortunately for Microsoft, I also attended the Build 2011 conference here this week

I was a beta tester during an era when companies paid for the service. My testing philosophy is for me to jump in without full knowledge of what I'm doing, which some say for me comes naturally. This week, Microsoft loaned me and other members of the press the developer preview tablet that paid attendees have received to take home. Some say a picture is worth a thousand words; with me, it's worth 20,000. I've made some pictures of my experiences, and I think you'll agree with both me and CEO Steve Ballmer that there's a lot of work to be done.

There's no better way to show off a new web application than by navigating through it with an expert hand, telling its story and recording a short demo video. Some startups pay a pro to make their videos but more people make their own. Sometimes they are terrible.

Attachments.me is a startup that makes it easy to sort through your email attachments and the company has a pretty good little demo video on its front page. Co-founder Benjamin Coe posted a video about videos yesterday and his method for making simple demo videos looks like something many people could benefit from watching. Different people have different methods for making videos but the big take-away I got from watching Coe's is that it's important to have a plan. I like his.

How big is YouTube? It's biiiiig - 3 billion views per day big. On this, YouTube's sixth birthday, the Google-owned video sharing service released a few impressive stats (via infographic, of course), detailing its impressive numbers. Today, users upload more than 48 hours - yes, two days worth! - of videos every minute. This represents a 37% increase in the number of uploads over the last six months and a 100% increase over last year.

YouTube will launch a new discovery tool called Topics tonight on its labs page TestTube, the company told reporters this morning. Topics will allow users to discover high-quality videos about topics of interest to them without requiring the user to enter detailed search queries.

"With Topics, YouTube will try to deliver results by honing in on comments from users on videos they have viewed, sites that have linked to the video and even what users have watched in the past," writes the BBC's Maggie Shiels this morning. A YouTube spokesperson confirmed for us by email that an official announcement will be made on the YouTube blog this evening.

YouTube crossed the 1 billion subscriptions mark today and if some of those aren't yours - you're missing out. Subscription to YouTube channels is a great way to make use of the service, especially on mobile devices.

Have you got some favorite YouTube subscriptions? I do, and I thought I'd share them here. If you've got some good ones to recommend to ReadWriteWeb readers let us know in comments so we can subscribe and watch them while exercising and folding laundry.

The joy over wide-spectrum sharing has grown more muted even as it has become easier. The brouhaha over privacy issues, ranging from Facebook to Google to the U.S. Congress, has put the frighteners on some users.

For those who wish to share videos, but not with the whole of mankind, VidMe hopes with today's launch to offer an alternative to YouTube both online and with its iPhone app.

The Internet of Things is the idea of a web of data provided by things like real-world devices and sensors. It's something we've covered in great detail here at ReadWriteWeb because where there is data, there is a platform for services and mashups. When that data is intimately tied to our real lives off-line, that's exciting. The Internet of Things offers a whole new world of opportunities for improved decision making, innovative services and (unfortunately) social surveillance. It's loaded with implications to consider.

Whether you've got 5 or 30 minutes to spare, check out the two following videos (one short, one long) that both do a great job of explaining where the Internet of Things is at and why it's so exciting.

IBM's Smarter Planet team has created a great 5 minute video explaining the emerging trend of Internet of Things, an exciting topic ReadWriteWeb has and will continue to cover frequently and in depth. Internet of Things is about, as the video explains, the coming future when there are more "things" on the Internet (sensors especially) than there are people.

The result of that will be "a kind of global data field" the video says. "If we can actually begin to see the patterns in the data, then we have a much better chance of getting our arms around this. That's where societies become more efficient, that's where more innovation is sparked." Check out this artistic, succinct, optimistic and inspiring video explaining what could well become a big factor in how the future unfolds.

Recently, Netflix sent out a survey to select subscribers in order to determine interest in an iPhone application for streaming movies via mobile phones. According to the survey's wording, the proposed app would be Wi-Fi only and would offer the same content that the Netflix "Watch Instantly" service provides. Currently, subscribers are able to stream movies and TV shows to their PCs and Macs as well as to game consoles like the Xbox 360 and certain set-top boxes like the Roku. However, plans for an iPhone application were far out on the company's roadmap last anyone heard.