Imagine, you can type in a query like “joost de valk class:vcard” and Google comes up with my contact page, because that has a vcard class in it’s markup, the main class of the hCard microformat. This was suggested today on the uf-discuss mailing list, a mailing list I’ve been lurking on for quite a while now, and it made me go “YES! That’s what I want!”.
It would be so cool if Google, or any other SE for that matter, knew how to handle searches like that. The same could be done for events, resume’s etc. Google would probably want to make it simpler, or make another page for it, since I can’t see my mum typing in “class:vcard”, but the idea is good, and I think something people should be working on.
Update 18-2-2010: It took them a while, but it’s hear now: Google & Microformats.