Have AdSense in one of my pages and one ad with really great earnings compare with all others 0.60 $, problem its after i see page in my tracker stats I visit and find there one simply page with main title "THIS DOMAIN NAME HAS JUST BEEN REGISTERED FOR ONE OF OUR CUSTOMERS!" and just content about register domains using that hosting provider. So my visitors are redirect to a web site with no good info, you think will be more good to change keywords and have other ad there and be happy my visitor are drived to a good place or to keep this settings ?
I suppose that depends on whether you have a site that is aimed at repeat visitors or not. If you want to build a base of people that come back frequently maybe it would be nice of you to block that ad. But if your traffic comes mostly from search engine hits then maybe you should just keep the ad and enjoy the profits since most of those people probably won't be back again anyway!