6 main sites which offer money for paid reviews are:
Blogsvertise.com
Sponsoredreviews.com
payperpost.com
reviewme.com
payu2blog.com
blogtoprofit.com
smorty.com
(There are other sites which offer same services but they have very less advertisers and so very less reviews.) You need to submit your blog(s) to these sites. Blogsvertise and reviewme accept blogs quickly and readily if you meet their minimum requirement. Payperpost needs 3 months of domain history for you to submit. Similarly other sites also have their own criteria for acceptance and review submission. I suggest you to read the TOS for each of them carefully. And also don’t forget to open a paypal account first for money transaction.