Adsense ecpm for one of my sites has fallen to zero and stayed there for a month. Normally this site makes something every day, although not a lot. The website has impressions and clicks, but has made zero revenue for a month. How can that be?

Other similar sites I run are generating normal revenue. I've tried everything I can think of to fix it, but nothing seems to make any difference. What should I try doing? What could be wrong?

Robin

Probably because Google thought the clicks you got were fraud. It happens. As to why you're no longer receiving money when you once did there can be a lot of reasons. We're going to at least see the site before we can offer any real suggestions.

Also not all adverts have a CPM component, it is only if the advertisers have chosen the CPM charging method.