Ask HN: Third-party use of Facebook Connect App?

I stumbled upon this campaign on Facebook (possibly by SW airlines.) https://www.inbizi.info/southwest/?tr# (NOTE: Don't give access to this app. Its spams on your wall / photos) Refresh this page, everytime it shows a 'Login to Facebook' via Sponsor (Yelp, FourSquare, AirBnB and so on). My question - does Facebook allows this? Is it done with permission (or through sponsorship of FourSquare / AirBnB / Yelp and others?)