What are the rules for using the data in Freebase?
Freebase data is available for use under a Creative Commons license known as an “attribution” or “by” license. Under the terms of this license you’re welcome to use information from Freebase in your own site or applications, as long as you credit Freebase as the source. Put another way: information in Freebase is available for commercial or non-commercial purposes — just remember to attribute it to Freebase.com and the community that created it.
