Via Mashable -by 
Location-based advertising? You’ve seen that, right? Practically every other ad you see on the net is tied to your general location, which is derived from your IP address.
Eventful, however, is a local events site, which means that the ads on it – now delivered by Placecast, described as “the world’s largest place-based interactive media company” – will truly be local, pinpointing your exact position. Here’s the example provided by Eventful:
“A user checking Eventful’s site for the next Coldplay concert in New York City would see an ad for Scion with the address and link to the closest Scion dealership, while a user looking for outdoor activities in San Francisco would see a localized ad for Subaru.”
