What can I say, I'm guilty of being a serial texter. With a qwerty keyboard, an unlimited everything prepaid plan, and friends that prefer the writen word over a spoken one, I text, send picture messages, send emails, all from my cell phone (wow, that sounds like a comercial). I'm currently a bus and subway rider, so my conversations are private this way. Once I start driving again, I'll switch on my headset, and actually talk to people again
One pet peeve I have is when on a phone call with someone, I can hear them texting DURING THE CALL! Arg.