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Other ways are the shady areas of grey hat practices and black hat practices that are not allowed. Your company will not want to be involved in any black hat or unsanctioned SEO practices. Want to know why? The reason why you do not want to use unacceptable means is because Google has a way of knowing when you do use a black hat practice and then they can penalize your company. Professional Seo services companies are well aware of what is and is not acceptable ways of getting your site ranking high on the SERP. If you stick with a SEO services company, you will not have to worry about getting penalized by Google for bad SEO practices.