I see your points as people said about a mafia player likely sending PMs. I would say that is a fair point to make, except look at how my decision was made on who to PM. And look at exactly how much thought I put into this.
Just to make things as crystal clear as possible see the Screenshot below.
12:01 - Not in screenshot - I post that I did not receive my role and that I was going to PM general about it.
- Click image to enlarge.

12:02 - I apologize for being "drunked"
12:04 - makes a jokevote on me because I was drunk.
12:05 - I laugh at him for acknowledging my drunkenness and realize I wanted to play with the PM system.
12:07 - THIS IS IMPORTANT. Now 2 minutes later, I PMED General the intentional leak, I came BACK to the thread, and then posted the possible setups that have a bomb in them.
So what does this mean? It means it took about 1 minute of thought/time to intentionally leak that PM. That means I didn't do anything else, but just playing around in good fun. I even declared BEFORE THE GAME, that I wanted to go PM crazy just for the sake of PMing.
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Now into some WIFOM arguments.
I didn't receive my role until AFTER the two deaths. Therefore, I didn't have any stalker info to relay to my scum buddies.
If I was scum, would I REALLY risk PMing them, knowing they could leak?
I can't even think of anything I would want to say to scum buddies privately at this point of the game.
Wouldn't I try to paint them scum publicly at first and if we are at a crucial vote, THEN maybe PM them telling them this is the better bandwagon to vote for?