The new messenger beta comes with Launchcast and games. Good for Yahoo revenue. Useless for me. Even if I remove these components, the window also has no ability to resize down from a good 1/6th of my desktop. WIth only 5 people online right now, I'm seeing enough room for 10 more to come on line as a big, blank white space taking up room on my desktop.
I'm currently hiding it below or to the side. This doesn't accomplish what I use an IM client for - seeing who's on line. If I have to keep moving the IM window to see who's available and manually positioning it as people leave or enter the 'online state' it is useless. I've had trouble with GAIM and Trillian before, but Yahoo's new messenger will drive me to try them again.