Hacker News may not be the best sample unless if you are trying to find out how many geeks (let's face it, if you are reading this you are at least a geek :-) own a smartphone.
Droid here, love it. I had a Blackberry Tour and 8830 before my Droid, and they are OK, but not nearly as useful as a rooted Droid. I love being able to setup a wireless AP from the Droid when working on the go with friends.
I'm old. I rarely make a voice call on my mobile. I don't text anyone or need email on my phone, so no smartphone. However when the contract expires in December I'll probably get one.