I wrote a small User Script for the Operator Toolbar (Firefox Plugin to handle Microformats), so you can transform the detected microformats using the Optimus transformer. Optimus supports two kinds of transformations (microformats to jSON or to XML) and a basic microformats validation.

The User Script supports the transformations and the validation for the following Microformats: hCard, hCalendar, adr, hReview, hResume, tag, geo, XFN, xFolk, license and hAtom-hFeed.

Download: Optimus User Script for Operator V .1 Latest Version

If you find a bug, please report it through the comments…

User Script tutorials:

• Creating a Microformat Action User Script (Basic)
• Creating a Microformat Action User Script (Advanced)
• Creating a Microformat Action User Script that uses POST