It looks like, apart from one migrated question, that website is being used to refer to the Android Market website. It should be renamed to market-website or something if we want to keep it. We could possibly just edit them to use the existing market tag instead.
websites has two about the browser (those should probably be retagged browser), one actually about websites, and one about viewing web pages offline. The html tag is similarly all over the place, I'm not sure how we should sort that out.