The two whrrl ghrrls were really working the line at the improvised Apple store at SXSW 2011 giving away keychains that had lottery numbers to win a car. @whurley first turned me on to whrrl.
From whrrl's website "Whrrl â is a location-based, social application for the iPhone, Android and Blackberry designed to help people discover highly relevant new experiences in the real world."
"Whrrlers join Societies, groups of like-minded people with the same real-world interests, passions and brand affinities to exchange recommendations (new places to go and things to do) and experiences (via photos and notes)."
Whrrlâs Society Rewards program enables businesses to participate in the discovery experience by offering prizes at places that Whrrlers win by checking in."