[dutchbb]

Just a warning here... I was reading about seo and step 3 might not be such a good idea. This is called cloaking and it is a black hat technique. It is clearly stated in the google quality terms as a forbidden way to SEO.

Actually I found out after installing this, my pagerank for my homepage did go down 4 pages for a very important keyword, I didn't do anything else that could be suspicious so I removed this!

The sitemap is good, but optimizing pages just for search engines and make them look different from what you human visitors see, is NOT recommended and you take a high risk for being penalized by google or other SE.