I think it's like anything else. If you make your review site better than what's out there you can make a lot of money.

Most hosting review sites are obvious to me that the owner is promoting his or her affiliate links. I am never convinced that they actually know much about or use the product and they all tend to look the same.

What I love about Lisa's sites is that you can tell she uses the products she talks about and like one of her blog posts said, people don't mind giving you the commission if they feel you are being honest and you really do own the product.

For example, if a web host you are reviewing has a free site builder. Show a sample of the builder and how it works. Give me screenshots. Show me something beyond the price and the basic hosting features.

Be different, stand out and I think you can be successful at this kind of site. But a simple site with a list of hosting prices, web space and bandwidth stats is a waste of web space to me. There are already too many of those kinds of sites out there.