Thanks to Phillip Lenssen, I have a Writely account to play with. Seems pretty cool actually. I can see how useful it will be for collaborating on the many group writing projects we have in our PR and SEO firm. We do use jot.com as a Wiki, but that’s more for spreadsheet collaboration.
The list of features for Writely is amazingly long. Whatever you might use a text editor for is applicable for Writely including creating blog posts, MS Word docs, PDFs, web pages, and even Open Office docs. There are tagging features and some cool right click options too.
Do you want a Writely invite? You can either leave a comment here (I only have 5 left) or you can visit the Chat room at Google Blogscoped.