My company has had a very noticeable positive growth in organic traffic and rankings (2 keywords in the #2 spot) since they were brought on board. The team that has been assigned my site continues to demonstrate great communication and knowledge regarding not only link building, but also on and off-site SEO practices as well.
Overall I have had a great experience with Pittsburgh SEO Services, and would definitely recommend it to anyone looking to get good quality SEO work done.