Another thing to look at is a ad targeting. I have a celebrity site that was doing between .50 and $1 a day with approx 150 impressions. I've noticed the last week I was down to around 25 cents a day and today all i have is 1 cent. All the ads are talent agency, modelling agency etc and my visitors aren't interested in clicking on that. I've played around with the description and body text. Hopefully, I'll get some better ads.