Here is something interesting, Wordle. It's a web app that will take a bunch of text (or an entire web page) and turn it into a tag cloud.

Here is one I made:

Aviary - Creation on the fly / tools - [Stumbles via StumbleUpon]

Wow. This is a stunning collection of browser apps for editing graphics. It's currently in beta, but looks nearly complete.

Writing a Book in Google Docs - [Stumbles via StumbleUpon]

I'm a big fan of Google Documents. Here is how you can use docs to write a book.