Many businesses or agencies claim to be SEO providers but the only work they do is selling backlinks. The worse is that the quality of the back links is very low and tends to be spam. Thus, when looking for a SEO provider, you have to make sure that they are, indeed, a good professional provider like the local seo expert in pittsburgh pa.
The funny thing is that all sellers of those back links are actually aware that those links could potentially carry a risk but obviously they will not tell the risk to you because it can decrease their sales. So, you have to be careful with SEO services providers that can only give a lot of back links which are not natural. A good SEO expert will emphasize more on SEO on page by building a good website structure and the content marketing or content distribution rather than just looking for backlinks.