You use it to block spam and malware, yes. But you've just shown that you use it for other purposes as well. Correct me if I'm wrong, but wasn't there also an issue with The Pirate Bay on this too? That's neither spam nor malware (not that I'm defending what it is...), so it seems odd to act like this is just for protecting users.
I call bull on this statement. I once tried to send my friend a perfectly harmless link (no spam, no viruses, no malware or anything) and I couldn't because FB blocked it. The link contained a couple of images from South Park.
I can't imagine using the new FB mail for my communication if FB will censor the crap out of it.
Well, we'll accept anything in the name of security.