"signing up for twitter 9:02 PM Apr 25th, 2007 from web"

Pownce is a curious amalgam of Twitter and Pando. You can post comments, files, links, and events allowing one of your contacts, all of your contacts, or the whole Pownce world to view. Users can comment directly to specific posts. Unlike Twitter, you can have posts that are unlimited in size.

You can post using the Website interface. Pownce also provides a desktop tool that allows for posting. However, that is your only desktop option because Pownce has no public API. So unlike Twitter (which has a plethora of 3rd party applications) you get only what Pownce offers.

Meebo is a cool online application that allows you to log onto instant messaging without an instant messaging client on your computer. Meebo currently supports AOL, Yahoo, Google Talk, ICQ, and Jabber.

Creating an account is very fast--a three window wizard that asking you a little information--which then dumps you into a Meebo home page.