I do agree though that there is a disparity with links in signatures - Openhouse Jack (he uploaded to MTS2 today) and others can link to their paysite - either where they post their creations, or even in the paysites debate.
You may not agree with paysites, but if you say that they are entitled to link, and PMBD are not, that sends a completely different and not impartial message - it still means that paysites are seen as condoned, yet sharing your paid content with others is not.
I say if you won't allow PMBD links, then paysite links should be banned.