Somewhere in between blogging and social networking lies Twitter. Twitter asks one question – “What are you doing?” It is similar to the “what are you doing now” spot on a Facebook profile, it also resembles a blog because Twitter it saves each post of the members activity. Twitterers (?) post their deeds, musings, ideas just like a blog except that each post is limited to 140 characters, and you can (again, like a pure social network site) choose which other members you want to watch.