A realisation I just had: Twitter and Tumblr are similar in many respects. Both are microblogging (though the former more micro) services, both are interest-based networks, both work fairly similarly (retweets/posts, hashtags/tags, etc.). The demographics are different (Twitter's is broader than Tumblr's, which is largely just young people), but they're not fundamentally different services.<p>Yet their corporate masters differ. Tumblr, the company, totally <i>gets</i> Tumblr, the community. They understand why the site is popular, what people want. Twitter, though, believes it is Facebook.