Sonar comes to Android as it prepares for SXSW showdown over ambient awareness

Tech journalists have a bad habit of picking a theme each year for SXSW and crafting a drama around which startup will “win” the festival. This year the contest is among the “ambient awareness” apps like Sonar, Banjo, Highlight and Glancee. All try to provide information about friends or relevant strangers who are close by.