The growing legion of foursquare users can now start following and friending celebrities via the location-based mobile service through a new pact with Viacom networks MTV and VH1.

Foursquare, which enables members to earn points by visiting businesses — and automatically alerts their friend circles of their whereabouts — is using the partnership to kick-start its new Celebrity Mode tool.

Users can begin following MTV stars such a Jersey Shore’s Pauly D., who will start letting fans know where he has traveled and share tips on his favorite locales. Other stars from MTV shows The Hills, The City and the upcoming Real World: New Orleans are scheduled to begin using foursquare, said officials, as will talent from the VH1 vehicles The T.O. Show, Fantasia for Real and What Chilli Wants.

For MTV and VH1, the thinking behind the new pact is that fans of these networks shows will have yet another outlet to stay engaged.

As for foursquare, the celebrity content both provides its users with more information on popular local businesses, while allowing it to compete with Twitter, which is used by numerous celebs.