hello guys. I run 4 ad units on each page on a site.
I have 2 Skyscrapers. one on the right and one the left and one Large Rectangle in the middle of a page (below the content) and the fourth ad unit is the "Button (125x125)".
I was running 3 ad unit and one link unit (120x90) on the top of the page, it was performing poorly so I removed it and put the Button (125x125) ad unit. that's 4 ad units on a page.
I am aware that google tells us to use up 3 ad unit. should I remove the fourth ad unit to avoid any action taken from google on my account? has anyone used 4 ad units before?