ReviewMe pays bloggers to review web sites. How much depends on traffic and reputation of your blog. People willing to buy reviews surf the ReviewMe web site to select sites to review their product or service. There is another service where a company or person can list their review request and amount to be paid and any reviewer can select it to perform. These are usually low price reviews, however.
ReviewMe allows you to select the price you are willing to review for. The site will recommend an amount you should charge, though you can override it. Many of the most popular blogs make good cash this way.
One of the good points about the TeviewMe program is you are allowed to mention that you are getting paid for the review. You are also able to give a negative review if that is what you deem appropriate.
I have found that this is a better program for higher traffic blogs. Many low traffic blogs will not get the review offers they are hoping for. Not until they have a good reputation for them.