Suppose I see something I want to buy in the classifieds. It's not sold already, and there's no post indicating that a sale is in progress. But there is a post from someone saying they've PM'd the seller, and no post saying a sale has fallen through. So - Would it be OK for me to PM the seller, and post a message saying I've done so? On the one hand, I don't want to mess with someone else's attempt to purchase something. But on the other hand, the first PM'er may have decided he didn't actually want to buy. What's the consensus? Thanks. Apologies if this has already been covered somewhere. I couldn't find it.