thats your problem bring in more usa visitors and you might make more.. or you might have to switch your niche if you only want to do adsense
that happens from time to time. Don't cry, go on to the next niche, do some social bookmarking, that's it.
Search Engine Optimizing (SEO) of content is extremely possible. Most important of all is to target the right niches and the RIGHT keywords. Then more relevant ads will show and you will get more clicks and more money pr click.
Dont worry it happens sometimes, try to work on your niche, bring more traffic to your website, soon you'll be earning more
I wasn't expect that sport niche is so bad pay per click is too low I can't change the site niche Are you sure that sport niche is not have high paying keyword? Thanks for you..