AT&T Interactive has opened up all the content on YP.com to third party developers. That means app developers will have access to YP.com’s 17 million local listings, maps, reviews/ratings and deals for free:
Great list from Greg on free local data set providers.
From Perry Evans in the comments:
It also feels like we’re “racing to the bottom” for core directory data businesses. The value now has to be constructed on top of a quality directory data resource, and this continues to demand that data-centric businesses expand beyond simple license and hosted data services.
I love the developer challenge they are running to get some cool apps created for SXSW. More info at http://developer.yp.com/