First, I have a nitch dating site. I am trying to stop a massive decline in what I receive per click, which is now down almost 50 percent over last year. I am ranked high on google for keywords related to my market. Higher than many of my competitors with 10 times as much traffic as me. I often see my dating nitch competitors ads displaying on my site. I have really been reviewing my site and filtering out unrelated sites that have nothing to do with dating. However, the results thus far have been nothing good. I am wondering if blocking my dating nitch competitors who may be targeting my site will do any good, or is it likely to make things worse. Has anyone else with a nitch market blocked competitors, and if so what results have you seen? It seems like a no win situation. p.s. I already tried that blacklist site and found it to be useless.