Last weekend, people from all corners of the technology converged on Austin, Texas for the 2010 South By Southwest Interactive (SXSWi) conference. Much of the coverage has echoed the focus of an old real estate mantra: Location, location, location. In a rivalry dubbed the “geolocation wars,” mobile start-ups Foursquare and Gowalla competed for attention as attendees used GPS-enabled phones to record electronic check-ins at various conference events. And while these two players often come up in reports on location-aware social networking, Twitter has begun letting users record where they tweet (giving new meaning to the word “follow”), and sources indicate Facebook will be rolling out a similar feature soon. Across the Web, sites are adding features that will quite literally[…]