Black Hat SEO is essentially any optimization tactics which violate search engine guidelines governing best practices for proper site optimization. Yes SEO is easy for somebody that knows how to use a computer and make a simple web page and knows the difference between page. Keep one important thing in mind — if your search engine optimisation is really good, then submitting a sitemap to Google will not be necessary. The best part of seo is to build more and more of content. I work in a big company as the ’seo guy’ but now its clear that SEO is only a small part of the picture and importantly I’m lobbying everyone that messing with meta tags is not the way forward.