Some pages work well with adsense - others don't. I'd be inclined to have a channel on each banner as you have a small number of them, and when you find a page that the ads work on, leave the ad block there. Remove ad blocks that don't pay well by all means.

I would say that if you have a lot of pages with low clicks and low impressions it's not really worth removing them. For an ad block to make a difference to your bottom line it has to have approacing equal or higher number of impressions in comparison to other pages, and disproportionately low clicks. You can make use of the eCPM figure here in helping to decide what pages really do perform badly.

I'd be inclined to leave the ads on most of your pages for a while to see what works and what doesn't. I certainly wouldn't change the pages daily. You'll never know where the ads are effective that way.

75-80% of my ads are the same everyday. I just can't believe that eventhough my content changes, mostly the ads stayed.

My traffic is the same, only the clicks are half lower.

Anyway thanks a lot for your input.

You only started the site last month, so THIS month, your regulars, if you have any, will have seen the ads. So that might indeed contribute to a dropoff. But many people have also been reporting dropoffs from June, perhaps a typical summer slump. So could be either, or both....

Thanks for knowing about the content changes.

1. my average of .25$ per click goes to .51$
2. my number of clicks was back to normal
3. my earnings in the past 2 days are doubled
4. i am getting some 1$ per click

My conclusion: Visitors Behavior is a big factor, you have to give them something new for them to click again.