deadsea - 3:12 pm on Jun 6, 2011 (gmt 0)
There is a reason that the search engines get to choose the micro-data format. They are the only ones offering incentives for using micro-data.
If you run a website as a business, it doesn't make good business sense to make your site machine readable. You would just be making it easy for your competitors to steal you data and get stats about your company. The only reason to implement micro-data that I've seen is what you can get from the search engines for doing so.