Advanced is the name of the hydroseeding company that ELS says had a lot of the same content as your site in post # 2. I am sure if I had referenced their URL hydroseedingokc.com my comment would have been easier to understand.
I don't think I would worry a lot about your meta tags. You have two description tags which is unusual but should not hurt anything. Most people put keywords in their metatags but they are only used by a few obscure search engines and probably having them or not wouldn't affect your traffic by one visitor a year. I think you have done a great job with your site.