Canada’s Yellow Pages Group has inked a deal with NYC location-based social networking startup Foursquare in a move to participate in the latter's "venue harmonization project", an effort to improve the accuracy of business locations in the Foursquare database. Foursquare breaks out venues into a dedicated API to help developers with their own location-based apps. As part of the agreement, Yellow Pages will be rendering 1.5 million Canadian business listings and information accessible to the social networking site through YellowAPI.com , the company’s own open platform application programming interface.