The thing I don't understand is that for me, Twitter and Facebook aren't a competition for blogs and RSS. They're different things and they're complementary. T

The thing I don't understand is that for me, Twitter and Facebook aren't a competition for blogs and RSS. They're different things and they're complementary. Twitter and Facebook are for posting links to things you've found or broadcasting short messages up to a few sentences. Twitter is for doing those things publicly, Facebook is for doing those things within the circle of your friends. Blogs (and RSS) are for posting longer pieces of text, articles and such things. When you want to post an article, you don't put it on Twitter (for obvious reasons) or Facebook (because it limits your audience), you put it on your blog (self-hosted or on a service like Blogger or Wordpress) and you post links to it to Twitter and/or Facebook. And when you want to invite your friends to a movie, you don't post that to your blog, you post that on Facebook. So I'm not worried that Twitter and Facebook don't have RSS feeds - I wouldn't even want to see my friends' FB posts when I'm reading longer articles in my RSS reader. And I'm not worried about Facebook killing blogs and RSS - yes, most people post stuff on Facebook and not on their blogs, but that's because most people don't write anything that would resemble an article. (I do agree though that Twitter should have some open API for getting someone's public tweets in a machine-readable form, but it doesn't have to be RSS, JSON is just fine.)