Paid to review is an activity in which meet the advertiser and the blogger in one place (one site). People can sign up as advertiser or blogger. Some site facilitate one account for the two types but the others need one account per type.

In paid review world, the writer of the review will get payment through the author site. Many kind of site are providing this facility. I don’t want to mention all of it because it will eliminate my page rank. What?

Yeah, the rumour I think is true. There is correlation between paid review and page rank. If you are dealing with paid review, you will get eliminated page rank of your site. So be aware and be wise to choose what preference which more suitable for you.