I had a similar experience with both Facebook and Twitter. I opened accounts on both so that I could experiment with using both for federated logins with OAUTH.

I had a similar experience with both Facebook and Twitter. I opened accounts on both so that I could experiment with using both for federated logins with OAUTH. Facbook banned me within thirty seconds - I didn't even get far enough to get an API token - because they said I was a robot. I tried to appeal but no luck. On Twitter I lasted until the next day when I logged in and discovered I had been banned. But on the bright side it was a valuable lesson in dependence on third parties I'll never forget. Federated logins with social platforms seem like a good solution to a number of subtle and common problems, but if those platforms can separate me from my customers on a whim and with no recourse then the risk of using them is too great. I'd rather lose the fraction of users that never make it through validating their e-mail address then wake up and find out I'd lost all my users because some algorithm decided to and no human can be bothered to review its decision.