Playing with tumblr
My first thoughts with the site is that it is very, very slick. Nearly everything I could possibly hope for is included, and everything else is conspicuously absent.
Take the editor; the only two things you see by default are a title bar (optional) and a text field. You can use markdown to format your posts (or a number of other markup languages), and the toolbar isn’t cluttered with hundreds of formating options, font manipulation, etc.
All your data can easily be exported, and they make it super-easy to import posts from your older blogs. You can choose from a bunch of really slick themes, or even roll your own CSS and HTML.
I don’t come across too many web apps that blow me away, but this one has left me speechless