I’ve prepared a small service for snow leopard: Tweet…
The service will simply take selected text and set it as your twitter status.

Using Tweet is really simple:
- select some text somewhere
- right click on it
- select “Tweet”…
your browser will open twitter and prepare the updated status.

Tweet Service v 1.0
MD5: a2635f700f119665936c87ffac9adfa5

The zip file contains an installer package that requires admin password to get installed… i don’t like this solution very much… but it’s the easiest way to install it :/.
You could check with SuspiciousPackage that package will install only 2 files:
- "Tweet This" in "/Library/Automator" the automator action used by service (you can also use it in your automator workflow)
- "Tweet" in "/Library/Services" the service

If you’ve got trouble you can watch this video