I'm quite skeptical of just about every offer to login with Facebook, or install an 'app' within the site, whether it's Apple, Etsy or some other dishonest corporation. Just about everyone wants mainly to gather your information for some other purpose.
Unfortunately, as usual your average user thinks nothing of clicking through the permissions page on FB without reading or understanding what it says.
Unfortunately, as usual your average user thinks nothing of clicking through the permissions page on FB without reading or understanding what it says.