The newest release of Spaz, which came out a couple days ago, adds some significant new features:
- Image uploading via Twitpic.com
- Crossposting support via Ping.fm. Try beta code “vivalaping”
- Support for microblogging services with Twitter-compatible APIs, including Identi.ca
- A Dock icon badge with the unread message count. This is probably less significant if you are not running OS X.
You can read the whole fat list of what’s new. Also, if you want to talk to other users or help with development, here are some resources: