Google again, today penalized another guest blog network known as “PostJoint”, PostJoint claimed in series of blogs posts explaining how it is different from MBG network and does not leave any footprints for Google team to be detected. Matt Cutts confirmed the penalization on twitter

If you will search on Google for “PostJoint” , their website does not rank on first page.

Google previously penalized MyBlogGuest network.

PostJoint also confirmed the penalty, however said that it is manual action penalty, and not from any incoming links. PostJoint previously stated that they process more than 3000 guest blog posts per month without leaving any footprints and almost 70% blogs are rejected due to quality.