In the middle of last week I noticed a spike in impressions & clicks on 1 of our content campaigns.
On checking the networks report I discovered that 1 site had delivered over 56,000 impressions in 2 days with 80 clicks.
This represented 57% of the total impressions for the 2 days & 47% of the clicks.
The name of the site immediately set off alarm bells - a .info site with a reference to full page ads. When you copy & paste the site it is a redirect to a phony Google search engine page that is misspelled - gogoel.
I immediately blocked the site however I would be interested to know if anyone else has run into this & how they managed to get an approved AdSense account?