Popular messaging service Imo added a new feature today that helps friends meet up. The feature is called "People Near Me," and while the idea may not be new to the group messaging space its an important addition to a popular app. When you open the People Near Me page, you'll see other users with the app open to that page in a specific (although unknown) radius based on your GPS location.
The feature will show profiles of nearby friends, but also of nearby users that are not in your contacts list. Imo is positioning this more towards befriending people who you've met in person and just want to swap contact info, say at a concert or social event, but you could theoretically add friends and start chatting with complete strangers, if you both wish to do so. It's an interesting way to swap contact data considering the other options like using NFC, Bluetooth or something like Bump, but the end result should be about the same.
You can grab an update to Imo at the Play Store link above.