Summary
A key to optimising your website is varying the sentences and words that make sense to your readers. Each sentence, phrase and column must be sensible and valid.
Popular pages are those that you can link to from inside your website designs. You will also need to determine which Search Engine Optimisation techniques are applicable to your site. If you are operating an online store, navigation and ease of checkout should be your priority. If a general information site, ensure that your pages are filled with up to date content.