Example pages are part of the exploration The microformats process which must precede proposing a new microformat.
Purpose of Example Pages
(adapted from The microformats process)
Document current human behavior. Remember, we're paving the cowpaths- before you do that you have to find the cowpaths. Your documentation should be a collection of real world sites and pages which are publishing the kind of data you wish to structure with a microformat. From those pages and sites, you should extract markup examples and the schemas implied therein, and provide analysis.