We’ve also been getting those every once in a while from people trying to signup with Google while using Facebook’s Browser.
Seems like just a childish competition. For such big companies, they are quite childish and unprofessional. Google itself has been a struggle to keep, with their dumb alert policies of a few minutes before shutting down. Facebook we just gave up already.
Lazy but functional ha. One last question. How did you detect the browser? Its not a normal field bubble is supplied. looks like the code version of it is navigator.userAgent.