GROWLr makes finding user in specific locations, by screen name, and several other criteria easy. 

With the useful Search feature, you can enter a location, a profile name, age, height, race, status, type, and what users are looking for on GROWLr. 

Simply tap the the Search button, fill in as much or as little as you want, then tap search. 

You can also search by email by tapping the email tab at the bottom of the search screen.