[dcurtis]

Ah yes, the sole exception to this security sacrifice is spammers. You have to keep them out, no matter the cost.

Posterous does a good job of keeping them out, I think, because I've never seen a spam post.

[mikeryan]

This seems mostly security by obscurity.

If spammers already have a list of "valid" email addresses, how long before they start randomly hitting [e-mail] with spoofed headers on a regular basis?

[rantfoil]

That's a war we will fight when we have to. And we will fight it with relish and aplomb.