What are some causes of an increase in CPC?

[Mark_A]

CPC has risen from about £1.60 back in June to most recently in week 1 of September £2.00 which is a significant increase.

I have looked through google's own account recommendations and implemented those that make sense. Some don't though so I haven't blindly accepted them.

Our advert coverage is both on google's search page, and also some on network pages which I don't trust.

Interested to hear what people think. The account hasn't changed much where we are concerned. key words and the like.

[Mark_A]

Ok, so I had a dig, it seems google has been having a play outside broad match and has been making up keywords itself which I can see in my assets list. Now deleted, also there has been no CPC cap, now reinstated. Interestingly search network hadn't featured much despite my not turning it off. Hopefully the Max CPC limit should calm things down and if it still does silly things then I will change broad match keywords to phrase match to further bring it under control.

[Mark_A]

Just to update the thread. Installing the Max CPC and some other changes has brought Av CPC back down to manageable levels. Panic over! :)