I came across this great wine blog locator.  It is a map by Ryan at Catavino  which can be found at the Wine blog Atlas.  

 This is a map of wine blogs from around the world, each focusing on a specific region.   You browse through these pins and learn about wine from the “local” experts that have been assembled.

Obviously if you know of a blogger who should be on the map email Ryan at the site Catavino which is on the Net.