A very useful Facebook debugger tool where you can check how your webpage looks like on Facebook when like button is pressed, without actually pressing the like button.
Google Docs or these days Google Drive can make collaborating with your colleagues or friends much easier by sharing Google Document, Spreadsheet, Presentation, Pictures or a whole folder.
The latest video interview with the legendary Bill Gates, where he's talking about the Windows 8, Windows Phone 8 and the newest player in the tablet market, the Microsoft Surface.
Camera images usually contain additional description about camera settings and scene information of the the picture taken. By using EXIF, you can view this data online.
If you are a heavy twitter use, possibly with more then one account, than I suggest you to give Tweetdeck a try. You can arrange, schedule, monitor and manage your tweets with ease.
Google just announced that you can be one of the chosen ones who will have a chance to get their hands on Google Glass before they go into mass production and hit the market.