Yea, I'm a co-founder for the site. It's an "auction ads" site that is self-contained (doesn't use ebay auctions or other auction data). We've got multiple sizes for ads (like adsense) and we're using a highly-cached architecture to serve up the auction ads (typical for ad-serving sites). We use linux servers, memcache for avoiding DB calls, apache, php, mysql, ... The normal stuff. :) We also crawl websites on demand for finding context-sensitive auctions to serve-up similar to adwords. Most of the crawling and text analysis stuff is done in perl.
