ok here's a few ways:
porn
gambling (lol yep)
website is secondary place of sale (website is not the only way to buy the product)
lots of popup adds to porno sites
lots of popup adds to gambling sites
that's pretty much all, every other way will cost ya money. the only reason anandtech hasn't bit the dust is because it has 80,000 members to view all the banner adds. keep in mind that it's very hard to get 80k members.
strange how you registered a domain before building the site, i have a site that's been up for like 3 months but i still don't have a DNS or a real domain, it's on a redirect lol