This Clown Fish iPhone Wallpaper is popular because Steve Jobs uses this as a wallpaper on his own iPhone.
Inspired by Facebook (What are you doing right now), LinkedIn too has added Status that is similar to Facebook feature though the language is slightly different (What Are You Working On?).
Viscosity is an online tool to help you quickly draw Modern Art Paintings using just the mouse - no artistic skills required. You can then download your "creative work" as an image and set it as a desktop wallpaper.
IDG, the company famous for publishing technology magazines like Macworld and PC World, has launched an advertising network for technology bloggers. I highly recommend signing up as these programs generally yield higher returns than Google AdSense because you get to specify your own prices.
Did you know that Office Live Workspace has a bulk uploader tool that lets you upload multiple files (documents, images, PDFs) from the local computer to your online Office Live account.
Planetaki is a new service that helps you read articles from different websites at one place in a format similar to river of news. This is a completely different concept from regular RSS readers like Bloglines or Google Reader.
While you can explore different cities of the world in 3D using Google Earth, Wings is a Flash based game that helps you fly virtually over any destination on Earth in the browser.
Use Google Documents like Google Notebook and save all your online web research to Google Docs.
Relevant Outbound links to authority / quality websites on your blog / website can boost your organic rankings in Google and other search engines.
Virustotal virus scanner does not require you to download the file attachment to your computer and it scans your file across multiple antivirus software including AVG, Nod32, McAfee, F-Prot, etc so the chances are very high that infected email attachments will not go undetected.
Wikipedia Traffic statistics is a gold mine for content creators and SEO crowd because traffic on individual Wikipedia articles is often directly proportional to the popularity of that term on the Internet.
Word Documents, PowerPoint presentations or Excel spreadsheets - these types of documents are usually not generic enough to be of general interest and aimed towards mass distribution.
The Google Webmaster Guidelines document recommends using a text web browser called Lynx to help people visualize how Google spiders will see their websites.
Save your Microsoft Office Documents on the web with Office Live Workspace. You can access your documents from any other computer including Outlook calendar and tasks.
Watching FLV videos in the browser is half the fun - you can do so many other things like split FLV videos into multiple clips, trim the introductory music, convert flv videos to MP3 songs, extract image frames from the video, etc.
Learn about advanced features of Google Analytics like tracking clicks in email messages, file downloads or links to external web pages.
Link Building expert Eric Ward suggests a technique that uses Google Alerts to build links on the Internet for your websites. Using this method, you may get inbound links from sites like .edu or .gov which are ranked very high in Google.