By now you’ve heard of tumblr. The blog building website was sold to Yahoo for $1.1 billion, and is the number one social networking site for people under 25.
Clearly it’s important, but it’s a bit mystifying. It’s less a blog than it is an anti-blog. Do you want to try to understand it? Do you want to figure out how to use it so that you can build your own site on the service?