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it uses information about what you like, what your friends like etc to determine if it wants to hire you for a gig

Why not just use Facebook oauth flow though?

Edit: or is that what parent comment meant by "asks me for my Facebook password"?

Nope, it opens up a fake Facebook login screen, themed to look like Facebook

How do you know it's fake?

To be fair it probably isn't fake, but apps should not be asking me for my Facebook password.