I built similar functionality into sites I built back in 1997 in PHP (and later in ASP). I.e. all of the things that you can get from the request (OS, referrer

I built similar functionality into sites I built back in 1997 in PHP (and later in ASP). I.e. all of the things that you can get from the request (OS, referrer etc) plus a crude geolocation based on an IP lookup and a few heuristics (which worked pretty well for everyone except AOL users). Seems like a foolish business plan (or maybe a business plan designed to profit from the foolish). Then again I had the same reaction when I heard about Groupon's business model.......