WTF is “Social Engineering Content”

Rich Snippets may depend on quality of other pages in your SERP. So if your page is not getting a Rich Snippet, it may be because of the other pages in the SERP not anything you have or have not done. WTF is “Social Engineering Content”?
It can get you a manual action notification.

They recently made it so sites with deceptive advertising – such as “download button ads” which are designed to confuse site visitors, would now be flagged as deceptive. AMP support in webmaster help forums and AMP demo/testing tools now available from Google. Facebook Instant articles now available to all publishers. New HrefLang errors in search console.