Websites that I find useful

Accidentally came across this blog post: The problem with social media for most people. Nicely stated and quite agree with his point. I think that it would be helpful to list and recommend some Web sites (not just social networks) that I'm finding particularly useful:

• Twitter. Actually, I rarely visit the Web site, but using Firefox+Twitterfox to get the latest messages from it. Sometimes just too noisy.
• FriendFeed. More comprehensive than Twitter, it help me filter some "noises" from other blogs, news web site, and of course, social networks.
• The Guardian. Famous UK newspaper Website, so far, my personal favorite news website. Its sub-section: Comment if Free (cif) is awesome.
• Yeeyan. Hardly find any particularly 'useful' Chinese ones, but this is an exception, really nice place to visit and spend some time to learn something, to see the world.
• Twine. If you're not interested in Semantic Web, it may not be that attractive. However, many great articles can be found through it. I love it.
• Babbel. God, what an interesting place to learn foreign languages, like French, German, Italian, or Spanish.
• Douban. Another Chinese one, however, my satisfaction to it is declining.
• Kaixin001(?) A good place to kill your time if you understand Chinese, but...
• Blogbus(?) It's where my Chinese blog resides, but not quite usable as a blog service. If GFW didn't exist, I would rather stick to my original one on Blogger.com.
• Geni. If you're a family guy, this is a good place to bind your big family together. Drawing your family tree and tracing your family history, well, fun to me.

Can't think of any more now, web services like Google Reader, GMail, Google Doc, Zoho Office, BBC iPlayer are also great, just not bother to specify the reasons.