I have this google hangouts app on my iphone and do chats and sometimes video chat with friends on there that dont have iphones or other devices...
So when I get messages from them i get an alert on my iphone... I was wondering why I dont get a notification on my Mac? I have my google account added in messages prefrences... (it says googletalk tho not jabber or something else)
I thought that was strange so i went and open messages on Mac... there was no converstion history but when by brother sent another message i was able to get it in messages and respond.
MacBook Pro with Retina display, OS X Mountain Lion (10.8.2)