date: //div[@id='content']//p[contains(@class, 'date')]/span
author: substring-after(//div[@id='content']//div[contains(@class, 'over-under-bars')]/p[last()]/text(), 'Posted by ')
body: //div[@id='content']//div[@class='pane-content']
strip_id_or_class: trackback-url
strip_id_or_class: over-under-bars
test_url: http://www.classyllama.com/content/layout-caching