Trillian is apparently giving out invites for their Trillian Astra instant messaging client—Windows version only—almost immediately after you apply.Trillian Astra - Beta Sign Up: all you have to do is sign up and you will instantly receive an email containing a download link. When installing, you will be asked to insert your token, which you can find in the email address you received with the download link.
You cand get a brief idea on how it looks by looking at the picture in this post (Yahoo Messenger chat window in the left and Twitter at the bottom of the screen).
