Thanks for your comments and blog posting about RDFa. Absolutely microformats need to be taken into consideration. My vision is that, a year or two from now, folks who want to express “just calendar events”, or “just business cards” will be using microformats. People who want to mix and match properties, make up their own, or express metadata about embedded images, page fragments, and the like, will be using RDFa.

My true hope is that, since RDFa is a superset of what can be expressed with Microformats (semantically, not syntactically), we’ll all be using the same tools to parse them. That’s what we’re aiming for with the hGRDDL proposal. You should really take a look at it, because it shows that we’ve been thinking quite hard about how to include microformats, and still address the numerous other use cases that microformats don’t cover.

The most important thing, if you’re using microformats, is to add that profile URL in the head of your document. Without it, building parsing tools for microformats is going to be come very difficult.

Is there any value to Web developers and Web users in having both RDFa and microformats?