Ah, but the crux is how you define "freedom of speech". After all, in the USA (AFAIK), it's legal to publish the personal details of a reddit user (which is exactly what gawker did here). And yet that is not allowed on reddit. Reddit have already decided "some things are legal, but we won't allow them here".
So you have to look at what sort of speech they protect (sexual photos of children, sexual photos of people without their consent) and what sort of speech they don't protect ("outing" people who take photos of people without their consent).