What are microformats?
Designed for humans first and machines second, microformats are a set of simple, open data formats built upon existing and widely adopted standards.
M. Quasthoff, H. Sack, and C. Meinel. n Proc. of the 2007 IEEE / WIC /ACM Int. Conf. on Web Intelligence (WI 2007), (2007)location=Silicon Valley, date=2007.
C. Schmitz, A. Hotho, R. Jäschke, and G. Stumme. Data Science and Classification. Proceedings of the 10th IFCS Conf., page 261--270. Heidelberg, Springer, (July 2006)