Facebook would know about Facebook policies. As for the Saloon, I don't know if there is a policy regarding the promotion of sites that facilitate the breaching of copyright. But you know, let he who has not done a little theft or two cast the first summons.
But if by "we" you mean the site... well, yes, probably, one day. Breaching copyright is presently too widespread an activity online to see every breacher targeted, but it'll happen one day.