How do people get into domain auctions or receive bids

Sometimes it confuses me as to how people get into domain auctions or receive offers on content that has no traffic and very little commercial value. Many of these domains seem to receive more attention than mines, possibly due to them paying to promote their domains. Now I can see how advertising improves the likelihood you'll end up selling a domain.

I have one domain that receives over 800 unique visitors per months. Many domains selling for thousands produce little traffic. I want to receive chance to enter a future auction. It seems virtually impossible to get selected into an auction. I will keep everyone posted about techniques to make a domain sale.