That pic you got of the icon is awful. You cant' see it. Maybe it the icon telling you that there is an update available for App World or BBM. Check those out.
scroll through your icons on your phone and find the one with a star on it. I'm pretty sure it is an app world update icon, as they just sent out an update for the program.
Looks like a notice that people in the group are chatting. Very cool feature, I just wish there was an easier way to figure out what the mystery icons are as they pop up.
Totti, you definitely answered (or lead me the way) the question