Sonar’s “Here-Now” social network shows Highlight how people discovery is really done

When it launched, the free Sonar app tapped Facebook, Twitter, and Foursquare data to see how you were connected to people checked into specific locations. Today, Sonar is adding a slew of new features to build on its promising start, including “Sonar Presence,” which allows the app to run in the background and automatically alert you of interesting people nearby, and “Sonar Status,” which acts like a tweet just for friends nearby.

The rise of real-time marketing: LocalResponse revenue in January equalled all of 2011

Companies are increasingly looking to tap into the real time nature of the social web and respond directly to customers based on their location and intent. New York’s LocalResponse was one of the the first to turn check-ins into an opportunity for direct marketing. Today its rolling out its Pro Dashboard, an analytical tool the company was using in house.

Scvngr grabs $15M more to locate challenges abroad

Scvngr, the maker of a check-in app that asks users to complete activity challenges, today announced it has secured a second round of funding for $15 million, according to the company blog. Investors included Balderton Capital, with participation from previous investors Google Ventures and Highland Capital Partners.