You can learn a lot about microformats by studying how they are actually being used on the Web. Some implementations include the following:
The use of adr
, hCard
, hCalendar
, tag
, and geo
by Upcoming.yahoo.com and Eventful.com
The use of adr
and hCard
at Yahoo! Local
The use of hCard
and adr
on Technorati
I suggest using the list of implementations of microformats in the wild (http://?mic
roformats.org/?wiki/examples-in-the-wild
), which includes lists for geo
, hCalendar
, hCard
, hReview
, and include-pattern
. Go to the listed sites, and use Operator to pick out the microformats.