payperpostlogo.bmpPayPerPost, the controversial start-up that lets advertisers pay bloggers for writing positive pieces about them, has acquired assets of Performancing.com — giving it access to about 28,000 bloggers.

The bloggers are mostly individuals with small blogs who may feel vulnerable enough to consider PayPerPost’s enticing, yet ethically-challenged offer.

VentureBeat wrote about the Florida-based PayPerPost here. It is backed by Silicon Valley venture firm, Draper Fisher Jurvetson, among others.

Here is the announcement. The assets include Performancing Metrics, a blog analytics service, and Performancing Exchange, an online “classifieds” for bloggers, which provides a way for advertisers to reach the bloggers based on subject matter, readership and pricing — and now a good way for PayPerPosts’s advertisers to reach the pay-hungry ones.

Recently, in conjunction with U.S. legal moves, PayPerPost forced its bloggers to disclose when they have received money for a paid post.