CHICAGO TRIBUNE - Feb 27 - 25.3M people accessed personals sites through mobile devices in Dec, versus 21.3M through a fixed computer, according to comScore. Location-based dating apps have been wildly successful in the gay community (Grindr - 4M users) but slower to catch on among heterosexual daters, likely because women are more wary of announcing their location. SinglesAroundMe, which features a map with drop pins showing where nearby singles are, recently launched an "approximate location" option that lets users displace their coordinates by 1 to 2 miles. Tinder scours a user's Facebook connections to see which friends of friends are single and nearby. MeetMoi sends members a push notification if a match is in the vicinity, getting no more exact than "within .2 miles," and only if both parties agree to chat does the app allow a connection. The app has 3.7M users. Of the 4M active users on OkCupid, half of whom access the site through their mobile phones, 1M have the Locals app. OkCupid also recently launched the mobile app Crazy Blind Date, which sets up a blind date — no photos, no profiles. As with online dating, mobile dating started off catering to people looking for casual relationships, but as it becomes mainstream more serious relationship-seekers are using it as well, said Mark Brooks, an analyst and consultant to the Internet dating industry. "It's more natural, you're out and about," said Brooks, who predicts that dating via mobile phone will change the game profoundly because apps can gather instantaneous feedback about how a date went, resulting in better matches. "People don't really know what they want, so the best way to match people is to look at their behaviors," Brooks said. "Your phone is going to get to know you, it is going to get to know your buying behavior."