A Ruby library for creating parsers that can be used to extract microcontent from (X)HTML documents in a variety of microformats.
This library has been out for a while, but now it has an official documentation page, and a RubyGem you can download from RubyForge.
Oh, and gem install uformatparser is coming up, as soon as I figure out how to make it work.
Update: Thanks to Tom Copeland of RubyForge for pointing me at the source of the problem. You can now install the Microformat Parser as a Gem with
gem install uformatparser
Do I need to mention that RubyForge/RubyGem is one of the killer features of Ruby?
Image by mollyeh11.

Labnotes » Blog Archive » The UI is the API: Scraping with Ruby @ Mashup Camp II
Labnotes » Blog Archive » Scraping with style: scrAPI toolkit for Ruby
code elements » Microformats: Path to Sematic Web?