Chirpify
Type 'buy' as a Facebook comment, buy some music
CNET
Country singer Tim McGraw wants you to buy his album -- on Facebook. Tuesday, the recording artist became one of the first people to try out a new system for selling through status updates on the social network. McGraw's team used e-commerce platform Chirpify to encourage Facebook fans to type "buy" in the comments section of a post to instantly purchase a special edition of the star's "Two Lanes Of Freedom" album.