What is the absolute lowest CTR you could bare? How low can you go before Google has your hide? How much does CTR affect your ad rank?
Lowest for me is 3-5% No idea but you will be paying alot if you went that low CTR affects your ad rank a fair bit but its main affect in my opinion is making you pay alot more for clicks when it is very low.
I've seen it said severtl times that if your ctr on search falls below 0.06% google will stop showing your ads, but I don't think google have confirmed that
Mine has been falling over the course of two days. It started around 2% and is now much lower. I getting a lot of clicks and then it slowed down and now it is pretty much done. I do not even know what to do at this point.