Operator is a "Microformat detection extension for Firefox".
"Operator lets you combine pieces of information on Web sites with applications in ways that
are useful. For instance, Flickr + Google Maps, Upcoming.org + Google Calendar, Yahoo! Local + your address book,
and many more possibilities and permutations. All of these scenarios are possible due to Microformats,
an emerging standard for injecting semantics into HTML."
Click on Google Maps (actually, click on the little triangle next to it), and it will display lat/lon values; now
click on a lat/lon value; Operator will extract the geo information and display it on Google Maps!
Yahoo has marked up their Yahoo! Local pages using Microformats
Go to Yahoo! Local. In the "Search For:" box enter "restaurants" (without the quotes).
In the "Address, City & State" box enter "Boston, MA" (without the quotes). It will show you a bunch of restaurants
in Boston. Select Meritage.
You can view a Google Map of where the photo was taken by using Operator - click on Google Maps in Operator's toolbar.
"You can use Operator to debug your Microformats. Holding down the Ctrl key when you select a
Microformat action will show you the HTML that corresponds that Microformat. In addition, holding
down the Shift key when you select a Microformat action will display our internal representation of
the Microformat data."
On the next slide you can see what Operator displays for Waldorf-Astoria.html when the Ctrl key is held
down while selecting the Google Maps action.
RSS and ATOM are ways to syndicate information. They are XML-based.
hAtom is an HTML-based way to syndicate information.
Here is an hAtom version of a CNN RSS feed;
I have enriched it with a geo Microformat for each news item. On the Operator toolbar Google Maps(7) indicates that there are 7 maps
that can be viewed (nearly every news item has a Google Map associated to it).