This application is huge in asia but not sure how big it is elsewhere in the world. It has a neat 'look around' function that allows you to see who is in your area via GPS and you can talk to them or people will also contact you. You can have a profile with pics etc. It will show people within 100m, 200m, 500m, 1km etc. I was using it while on business in China and was in contact with so many HB's I couldn't keep up. Disadvantages are you spend a lot of time chatting but harder to meet up, in asia at least most of the users are quite young and it drains your phones battery life using location data service. It's a good free chat program to have anyway like talkbox. Check it out.