Have you seen Go2Web2.0? It's an entire listing of high quality online sites, each featuring the stereo typical funky names, slick designs and handy buttons. Among this list (which includes more than 800 internet based products and companies) are some powerful online tools for writers. Here are just a few:
Online Word Processors, like Writely
This massive list is a collection of some of the coolest powertools on the web. I strongly suggest checking it out.