Since this seems so ideal for my parents and I'm sure others out there who aren't terribly fond of twitter, let me recommend something like the following: "Oop

Since this seems so ideal for my parents and I'm sure others out there who aren't terribly fond of twitter, let me recommend something like the following: "Oops! SproutRobot doesn't seem to know where that is just yet. It's learning countries quite fast though, so if you tell us your email, we'll be sure to let you know when you should come back!" To elaborate a bit: starting with a single country is very much understandable, but the assumption that one lives in the continental US is a frustration we encounter daily on the english-speaking web. This way you get them invested into wanting this service by getting their zip code (bonus: instantly gauging most interested international locale) and the promise of just tacking on one's email to eventually get to use it should be "just right" for most users. This is as opposed to geoIP blocking at the homepage level, which really makes me never want to visit those sites again. Edit: Depending on how much you intend to anthropomorphize the robot, maybe change the copy to "visiting countries" or some such.