I just read this thread: http://www.warriorforum.com/adsense-ppc-seo-discussion-forum/651374-panda-penguin-recovery-case-study-using-articlewyz.html.
I have a question to the developers: How can you are to say about these words:
"Q: I've been thinking about using the Yoast SEO plugin for a new site. What does everybody else think about using it/not using?
A: Yeah I had moved to the Yoast Plugin for several sights but now have reverted to no plugin or All in One SEO.
I had heard from a SEO guru that he believed the Yoast Plugin might being targeted.
He looks after 1000's of SEO clients and has more data to pull from."
Is your plugin may cause sanctions from Google?
Sorry for my brocken English