If have several customer sites that I have optimized for search engine positioning, and they list very high and bring in plenty of visitors. However, I have done the same thing for my own site and cannot get ranked in any search engine. Is it because my site include keywords such as web, website, and internet? Or, could it be that my site was black-listed from these search engines? If so, is there a way to check to see if a site was black-listed or not? Any comments on this would be greatly appreciated.