webmaster guidelines. Companies like JCPenny and Overstock.com have been caught using tactics to inflate their positions within Google's rankings. If you want to make sure your business doesn't get blacklisted, you probably want to stay away from Blackhat SEO. What is Black Hat SEO? Black-hat SEO utilizes tricks to inflate your Google ranking positions but when Google finds out what your up to they will do to you what they did to these corporations or worse. How do you avoid this? PC World has some good tips and I suggest you read them.Remember, if you hire an SEO firm to help you get better search results, it's your responsibility to keep them in check.