Post to Twitter from Google Wave!
A lot of third party services are now available that makes Google Wave much more powerful.
Tweety is one such service which makes it possible for you to tweet right from inside Google Wave.
All you need is to add a new contact: tweety-wave@appspot.com to your Google Wave account. [...]

Update Twitter and FriendFeed from the Linux command line
IBM has this interesting article on their website on how to: Update Twitter and FriendFeed from the Linux command line.
Check it out: Update Twitter and FriendFeed from the Linux command line