Both RDFa and Microformat are available as extention to normal XHTML text and both serve the same purpose. Both are used to give some more details about the information being displayed on a web page.

The things that needs to be considered are:
- what are the pros and cons of both technologies?
- which browsers support them?
- who popular they are?

I am trying to figure out which of these will be ahead in the race? and which one we should use in our porjects?