Today I received an email from reviewme (Aff) announcing me that my blog was accepted and they are ready to accept review orders, so I may write some paid reviews if I find something interesting to review.
It seems they now have a marketplace where advertisers set up campaigns and publishers can accept those offers so you don't have to wait for the advertiser to find your blog, you can find their offer and just accept it if they have such campaign. But it seems the prices for such campaigns are lower then what you would get if an advertiser would order a review.
Here is a link if you want to get Reviewed by this blog for $40 at ReviewMe!