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Re:How to write a crawler by drakaal on Sunday September 29, 2013 @06:05PM (#6466725)
The Content Extractor is overly simple. You don't want all the Anchor tags for most things, you want the ones that aren't part of the page template.

It took a lot of man hours to build the content extractor we use for our search engine.

https://www.mashape.com/stremor/stremor-content-extractor

Also because not every site has a SiteMap, or well linked site structure you may have to turn to Social like FB and Twitter if you want to get everything.

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