ReviewMe.com

Pros: Has a lot of blogs registered. Works nice when you pick a blog yourself.

Cons: Totally sucks when you create a "campaign" (a proposal for bloggers) and let bloggers pick it. After you create a "proposal", there's no chance to approve a blogger before reviewing your product. Any blogger who meets the criteria will do. My criteria was - Google-PR 3 and "3 stars" rating at least. All I got was a couple of robotic posts in some China-hosted splogs for almost a $100.

PayPerPost.com

Pros: Nice and easy UI

Cons: Errors on the website. And really bad support. I got a bunch JS-errors in IE8 when trying to add funds to my account. I got a number of "unsecure content" warnings from both IE8 and FF (you know, the ones that popup when you mix "http" and "https"). After reviewing their support forum, I found that I'm by far not the only one having this issue. And when I submitted my issue to this forum all I got was moderation and deletion of my messages. Duh.

Looking forward to try SponsoredReviews.com, updates to come.

PS. We still offer a free copy of Macro Recorder for a blog review, learn more.