If you've ever used Foursquare, you might've been getting emails lately from your friends on the social network inviting you to join Scoville. The invitation email says the Scoville team is coming up with �new ways to explore cities.� Only available to Foursquare members, the private beta allows users to �get a sneak peak at what we're doing and be the first to test our new features,� the email reads.