While Foursquare and Gowalla garner much of the buzz around location right now, Booyah's MyTown continues to garner many of the actual users. In fact, the service has crossed 1.5 million users. And it's gaining them at an incredible rate of 130,000 new users a week. Compare this to Foursquare, which during SXSW crossed 600,000 total users.