
YouTube yesterday launched a new feature called Active Sharing in TestTube that allows users to have their usernames shown next the videos they watched for the last 30 minutes.
To enable this feature, just go to the Active Sharing page and click on the “Start Active Sharing” and go watch some videos!
Geez, this thing look awfully like the Firefox Online Status indicator I created two days ago…

Q&A site Simplehelp has a novice-friendly tutorial that shows Mac users how to install Ubuntu Linux.
You’ll need three items: an Intel-based Mac, the Ubuntu OS (a free download, natch) and the latest Parallels build. (For the uninitiated, Parallels is virtualization software that allows Intel Macs to run other operating systems.) The tutorial shows you how to set up Parallels for Ubuntu, run Ubuntu for the first time and “tidy up” the installation (adding drives, sound, etc.). Every step includes a screenshot, so there’s little room for confusion. It’s a great primer for Mac users who want to take Linux for a spin but don’t have a clue how to get started. For more Parallels-driven goodness, check out Adam’s feature on running Windows and Mac apps side by side.
How to install Ubuntu (Feisty Fawn) in OS X using Parallels [Simplehelp]

Media repository Wikimedia Commons has a collection of 300 dazzling 3D icons, all of them free to use under Creative Commons licensing.
The Crystal Clear collection is divided into sections to simplify your perusal: Applications, Devices, File Systems, KDM and MIME-Types. Each icon measures 32×32 pixels and comes in the PNG format. They’re an impressive lot, perfect for site builders who want to add dashes of style and color. Alas, there’s no way to download the entire batch; you have to grab each icon individually. But that’s a small price to pay for such attractive freebies.
Crystal Clear icon collection [Wikimedia Commons]