nice you have good traffic! why u r using the 'sad' emoticon
I just keyed in your site in *www.dnscoop.com/ it values your site at $12000+ so generally it can sell from 1/20th to 1/10th of that value depending on your revenue but the domain name will drag down
but you can sell links at $5/link/month at text-link-ads.com
and reviewme is nothing diff.. just if you are approved there advertisers can see your site in the reviewme marketplace and if they want can order a review of a service/product or a website from you and the cost depends on your traffic, rss reader count etc
your adsense revenue must be decent I guess ??
for managing your sites rss feed just signup with feedburner.com (it has been acquired by google and is an excellent service)
and wah!! 500+ sites hosted in your same ip address so many sites crammed into the server hehehe shared hosting sucks