PayPerPost pioneered this model, with much controversy on the beginning
(related to the fact that they did not require disclosure on paid posts). Soon
other companies followed, most notably sponsored reviews and ReviewMe, refining
the process and expanding the paid blogging model.
Joining one of these sponsored reviews marketplaces will give you the opportunity to write sponsored posts on a wide range of topics. Not all bloggers are willing to get paid to write about a specific product or website (because it might compromise the editorial credibility), but the ones who do are making good money out of it.
