I operate a brokerage just outside of Washington. It's pretty much just one step up from selling them out of the trunk of my car (which I used to, too). And no, I don't really use them. I mean, outside of a few specialty interests, they're really kinda useless. Kinda interesting to look at at first, keep 'em around your house as really freak-ass decorations, but once you've seen one you've pretty much seen 'em all, and then you just get sick of them.
Though there was this one time, with this dude at the subway... ah, but that was years ago, and it was just a prank.