Nice article, covers most of the issues that scrapers have to wrestle with. Light on actual details/code though, I find this to be more of a goto when it comes to a good example of a scraping guide: http://jakeaustwick.me/python-web-scraping-resource/
One of my scrapers just alerted me to my link being posted here :). Glad to hear you're still finding it useful, I'll probably update it in the near future too; got a list of things I want to add to it.
