How To Be Invisible In Gtalk

Yahoo always had it better than Gtalk when it came to being "invisible" during chats..
So you love Gtalk and really need to avoid someone at the same time chat with another???
Well.. The solution is real simple..
download and install Google Talk Labs Edition
Although you still cant sign in as invisible, but it does have an option to set yourself invisible once you are logged in.
Just click on the down arrow, right below your user name on the top left and select invisible.