Only for people on Firefox, and only until Firefox gets updated again, according to Slick.
Not really sure PMs are really a good idea anyway, are they? You'd have to PM them to someone that's neutral between the two forums - if we PMd our bets to someone from on here, we could be accused of cheating by saying the bet was a winner - who's to say the person who receives the PM genuinely puts up the bet they received (assuming of course that it's going to be posted after the event, as otherwise it'd defeat the whole purpose of PMing it in the first place)? And if we posted it to someone from Letsbet, you'd be wondering whether they might pass the selection on to your opponent so he knows what you've backed.
And Chris, I think you're getting your wires crossed, Yorkie wasn't talking to you there.