Everyone I know who has one loves it, except for one thing - it sucks as an actual phone, or for texting. It's cool as hell though. Personally, I'm too fond of my qwerty keyboard (and an actual one, not the pop-up one on the iphone screen) to sacrifice it for cool stuff. I'd rather just get an ipod touch, which would be the same thing, effectively.
I actually got used to texting with it extremely quickly and I am at the point I don't really need to look anymore. Not to mention the fact that 90 percent of the time when I type something incorrectly it fixes it for me anyway.