I keep hearing how cool/revolutionary/hip this " Foursquare " thing is, so I figured I'd give it a try. Perhaps part of my problem is that I've got a Blackberry which, for some reason, doesn't yet have a Foursquare client. It works fine from its web browser, I'm told, but... this doesn't make much sense to me. Question: Does the Foursquare client for other smart-phones have some sort of geo-location feature (using cell towers or such)? Because, when using the web browser on the Blackberry, all it does is narrow my options down to the "Twin Cities" (which, if you don't know, is pretty big). I'm 0 for 3 in the Foursquare locations I've searched for, and the search process seems really awkward. When it finds something, the results seem random; that's probably because the locations are manually entered by other Foursquare members, but it seems to lead to a mess. For instance, this morning, I was at the Holiday station in Eagan. T