Yiftee GiftUp for Foursquare allows any Foursquare user to locate a friend nearby and send him or her a gift along with an invitation to "join me".
- Connect with foursquare
- Check in at a bar, coffee shop, or restaurant
- GiftUp will search your friends and tell you who is within a 1 mile radius
- Send them a gift that they can pick up at your current venue to invite them to join you!