Other social media sites have been doing it. Do we want to join in?
EDIT: Some people are saying that this is a power that ought to be left to communities… do we have a specific delineation of powers that relegates these decisions to communities? If not, then I recommend that these users propose such a delineation of powers. I would be very ok with this proposal failing because instead we got a more explicit set of checks and balances.
Which is why links should always be there. No matter how shit a site may be, a link to the original source for authenticity should always exist.