A couple more successful examples: tumblr and posterous. Built by newcomers to the blogging crowd, brought nothing new except for a better implementation. Mea

A couple more successful examples: tumblr and posterous. Built by newcomers to the blogging crowd, brought nothing new except for a better implementation. Meanwhile vox.com from Six Apart shut down. There are also a ton of social book reading sites. Goodreads is growing the fastest, even though it launched considerably later than LibraryThing (which was the first major one). Shelfari was acquired by Amazon.