http://username.github.com/pages.html http://username.github.com/sitemap.txt http://username.github.com/categories.html http://username.github.com/archive.html http://username.github.com/index.html http://username.github.com/tags.html http://username.github.com/atom.xml http://username.github.com/lessons/2011/12/29/jekyll-introduction