Palringo = Messenger
Best free app for me. Able to link all my MSN, AIM, googleTalk accounts together so that i can chat with my friends when I'm on the road. Great App so far. Will be better if it is able to continue monitoring my conversations when I'm out of the ApP. Waiting for new updates to allow that.
Once Apple finishes their Push Notification service, in September, it'll be able to do that.I'm not sure if Parlingo will be able to add that functionality. The iPhone has a strict limit of only running one app at a time. So even if the Parlingo programmers wanted to add that functionality (which I imagine they do) they probably won't be able to.
Graffitio. Deffinitely.
Graffitio is highly addictive; being able to post invisible messages everywhere you go that other iPhone users can read later is freaking awesome.
shazam