OpenSearch Progress

I really need to keep better tabs on Michael Fagan, as his June 11 OpenSearch Update is full of goodies.
OpenSearch, OpenSearch referrer extension, extensions, microformats, search suggestions

IdM Takes Lessons From the Microformats Crowd

A tip from Ryan sent me looking at MicroID:

a new Identity layer to the web and Microformats that allows anyone to simply claim verifiable ownership over their own pages and content hosted anywhere.

The idea is to hash a user’s email address (or other identifier) with the name of the site it will be published on, giving a string that can be inserted — in true Microformats style — as an element of the html on the site.

Microformats

Oliver Brown introduced me to microformats a while ago, the Ryan Eby got excited about them, then COinS-PMH showed how useful they could be for libraries, but I still haven’t done anything with them myself (other than beg Peter Binkley to release his COinS-PMH WordPress Plugin).
What are microformats? Garrett Dimon explains the theory:
When writing markup [...]