Spammers will be blocked and bombed.
Online auction sites
Ebay is the most well known but in my opinion it was never the best presented or organised - it just got fashionable. Now they are charging so much for small items, it might be time to move on to other alternatives - you own local advertiser for example? Monopoly businesses are not good, in the long run, as they corner the market and hold you hostage to their prices which they can charge as they please and you have nowhere else to go and have to pay up. It's "pay up or go elsewhere" - trouble is there is nowhere else to go! That's a monopoly.