jbayabas - 6:29 pm on Sep 8, 2012 (gmt 0) [edited by: jbayabas at 6:38 pm (utc) on Sep 8, 2012]
Donna, the last 7 months doesn't count. If it was, Google would have banned you already since then. The invalid activity may have happened recently. Don't you find it odd that both your accounts were banned with 2 totally irrelevant content? Have you shared your sites to friends or family members? Some jealous person may have Clicked bomb your sites. But that is highly unlikely. Even if they did Google's technology would just ignore those clicks. I still believe that it got to do with your Ctr the last few days.
Ember, how much daily page views do you generate for that high CTR? Less than 10,000 page views per day? If yes, that is also normal. However, If you get over 100k page views per day with very high ctr (over 3%) is suspicious.
jimbeetle, I based this observation as a publisher for 8 years with high traffic sites.
[edited by: jbayabas at 6:38 pm (utc) on Sep 8, 2012]