I used to hate Facebook Chat, but recently it has become one of the preferred methods of communication with many of my friends. As a result, I found myself reluctantly using it on an almost daily basis. Unfortunately, the Facebook app on iPhone seems to persistently show me as online even when the app is not active. On top of that, I have my Facebook notifications turned off because they are simply annoying and usually late. But all of this has resulted in me getting complaints from my friends that I never respond to their chat messages (since they see me online but I'm not actively chatting... and don't notice their messages until long after they have signed off). Does anyone know of a way to disable the chat functionality in the Facebook App?