Foursquare is the most popular location service app on the planet. I have been using it for a couple years now and very active. I use it for a variety of reasons, one being letting my friends and clients know of cool and interesting places to visit.
The ADVENTURER badge is received after you check into 10 different venues. I received this one at Walgreens in Aurora, CO.
The unlock text reads:
You’ve checked into 10 different venues! Now, how about inviting some friends into the mix? You can check out new spots together, share recommendations, and earn sweet BFF bonus points!
Follow my news and updates on Twitter, my whereabouts on Foursquare and relationship status on Facebook. Or send me a telegram.