So here's my 2 cents worth. Simple: "Buzz" means I'm first in line, and please consider my offer to buy your goods as you have advertised, without a quibble. * "PM Sent" means I've sent a Private Message.- and lets everyone know that you're mucking about at the top of the queue, so a firm clear BUZZ by someone else, with followup PM accepting the goods as offered, at the price offered, might be accepted by the seller. * "Unbuzz" means I'm not proceeding.- and lets everyone know that your previous "Buzz" is cancelled and the seller is open to offers. But it's a pointless post since in all likelihood The seller will likely also post "Bump" and announce the goods are back on the market. * Personally I think anything typed in a sales thread past a simple "Buzz" is irrelevant and likely not in your own best interests. You're announcing on a public forum your intentions and actions concerning a trade, leaving you open to a gazumping if someone covets the deal such that they'll sweep the table.