Fair Trade Music Agreement:

A community agreement signed by participating venues and Fair Trade Music which is its functional essence. In it, FTM agrees to promote the venue aggressively through its networks as a good community member and home of quality live music, and the venue agrees to pay the musicians no less than our minimums, which vary depending on cover charge and/or the size and liquor license.  

The agreement specifically has no legal consequences for either party -- if a venue decides to withdraw, FTM simply pulls the logos and stops the publicity.

More info in this blog entry.