title: Extracting semantic data from webpages
body: <p>I'm interested in extracting semantic data (simple template stuff) from webpages and other sources that aren't currently semanticly aware.  I've written crawlers and manual parser before in a bunch of different languages, but there always seems to be a lot of boilerplate and page specific code, and was wondering if you guys knew of any platforms or frameworks that simplified the process (open source only please).</p>
  
  <p>I'll be writing one if I can't find one, so links to similar systems or framework suggestions would also be appreciated.</p>