I chat a lot on AIM and Yahoo messenger, so naturally I'd like an IM app for my phone. I use Pidgin on my home PC, but I don't think it's available for Android yet, so I installed Nimbuzz. Nimbuzz works great, except that whenever the screen goes dark on idle, it disconnects. This is obviously unacceptable, because the screen often goes dark before the reply to my last IM arrives, making the other party think I've "hung up" on them. I decided to try Trillian instead, but it does the same exact thing. Is there an IM app out there that actually stays connected? It doesn't seem like this should be such a complicated thing!