I have 3 retail sites, where I dropship all of the products on my site from the N. American distributer. I have a few ads from adsense, but I've always made more money from selling the item myself. However, it does get to be a headache sometimes and so I wanna do something else. I've been seeing more and more websites for a while now that are only ads. I mean shop.com and pricegrabber.com are all just referral sites right? Neither of those sites have any products of their own. Am I wrong? What about a site like this one? http://www.whatsthediff.com/ It's pretty much just a blog/review site with links to sites that actually sell/offer stuff for sale. So my questions are? What are these kind of sites called, or is there even a specific name? How profitable are they? I'm sure pricegrabber.com makes a ton, but how about for a smaller site? And can somebody point me to a good post or resource to get started?