We review each and every written blog post to ensure that meets all quality criteria: Pagerank, grammar, punctuation, images, links, nofollor or follow attributes and many other. If for some reason we think that the advertiser won't be 100% satisfied, we reject that particular blog post.
To ensure that blogger won't delete an already written blog post, we setup a $50 threshold, so if our crowlers will detect that a blogger applied a nofollow tag in a sponsored review, or deleted a blog post, we refund the money to the advertiser and suspend the blogger's account.
