date: //div[@id="main"]/p[@class="date"]
author: string("Martin Fowler")
body: //div[@id="main"]
strip_id_or_class: date
strip_id_or_class: tags
strip_id_or_class: tagLabel
strip: //div[@id="main"]/h1[1]
test_url: http://martinfowler.com/bliki/DatabaseThaw.html