I had trouble with Webmessenger. After about 1 week, it wouldn't connect to AIM anymore. I'm wondering if AIM changed their protocol again that rendered Webmessenger useless??? I use the one that Verizon provides, it uses text messages instead of data but I have unlimited anyway! (Too addicted to not!!! )
I did use Nimbuzz for a while, but that one kept dropping the connection to AIM.