Using Foursquare or Gowalla?

Location is big! Research studies on location-sharing are numerous, but it's only now that services are actually reaching the market in a big way. Check-in services such as Foursquare and Gowalla are getting a lot of attention, but how are they actually used?

As a part of our studies on location-sharing, we're running a survey on when people check-in on Foursquare and Gowalla. We'd like to know more about the places you share, the people you share with, how you feel about checking in and the experiences (both good and bad) that you've had.

Using Gowalla or Foursquare? Feel like helping us out?
The survey will take you about 15-20 minutes and will help us better understand how and why people check-in - and there might be an Amazon voucher in it for you.