So I have my iPhone and I've finished flicking through photo's and got bored of trying to learn to use the keyboard so I guess I need to install some apps.

So far I have iPint, which I've tired off already. I also have the Facebook app with doesn't work and keeps asking me to re-enter my username and password so I've got bored of that too.

What other apps should I try? Is there a IM client that supports Jabber or MSN?