If you had a machine that could recognise addresses with reasonable accuracy and zero false positives, you wouldn't NEED microformats or the semantic web. That'

If you had a machine that could recognise addresses with reasonable accuracy and zero false positives, you wouldn't NEED microformats or the semantic web. That's the whole point, smart humans spending their time compensating for the stupidity of machines. It's a boil the ocean strategy that only makes any kind of economic sense of consider your users peons whose time has no value. Spending time making machines smarter is an investment in the future, the semantic web is an admission of defeat. Also, Google doesn't parse addresses at all, it uses its index data the same way it does spell checking.