Nostalgia's certainly getting a thorough kicking today, as iPhone users can now download the Hot Or Not Mobile app to "map out hotties close to you." Kind of like Grindr, the location-based dating service, only for people of all sexualities.
You'll remember of course, the Hot Or Not website from yesteryear, and maybe even the Hot Or Not iPhone app from a few months back, which lets you rate various "hotties."
While the app is free for most of the features, there's an in-app upgrade for purchasing a three month subscription to the service—which costs £30. I'm not sure whether ratings and virtual gifts are a worthy reason to spend the extra cash, but if you're just looking for an app that lets you meet singles in your area, the free version should be good enough.