I find that I send TEXT messages constantly, but have never set up a chat program (AIM, MSN, Yahoo, etc). Given that I can email files, and use Sprints Vision ability to send pictures, is there any real need to add (chat) this feature to my phone?

If so how does Causerie compare to VeriChat? (Please note I am one stingy SOB, so having to pay VC a yearly fee is a turn-off.)