Why do these pages look odd and have that strange link at the bottom?
Shortly, it's because your browser doesn't support CSS2, the format of the stylesheets I use with my website. Or, of course, it might be the case that your taste for the website design is orthogonal to mine...
If you are using a text mode browser (like w3m, elinks, lynx, links), those don't support CSS at all. The website looks as it should, except you'll have the link you clicked on at the bottom of pages.