MichaelCrawford - 3:50 am on Apr 29, 2005 (gmt 0)

By profiting, are you mean that you're paying for traffic, and that the advertisements you place aren't being paid for by the adsense ads you publish?

If so, you need to find a cheaper way to get traffic.

The cost per click of any ad can vary dramatically. The CPC I got from my top earning page was cut in half between one month and the next. One reason it goes up is that advertisers have bidding wars in hopes of getting exposure. One reason it goes down is that advertisers decide the investment is not worth it, or else that they're able to get enough business without spending as much on ads.

Besides the advice I gave above, another is that you should offer content on a wide range of subjects, as widely varied as you can while still staying somehow consistent with the rest of your site. That way, each page will offer different keywords, and you will be running a wide variety of ads.

If all your ads match the same keywords, you are at the mercy of just a few advertisers. If every one of your pages has different ads, then a lower CPC for one keyword won't affect you that much because the CPC for unrelated keywords is likely to stay the same.