Pete Ramey -American ex-farrier turned barefoot advocate. He has some EXCELLENT articles that I have spent hours and hours reading. Fascinating stuff!
Andrew Bowe - Aussie ex-farrier, runs The Barefoot Blacksmith, resides in Victoria, runs clinics all over Australia. I have attended one of his clinics so far and thought it was excellent.
Lucy Priory - Another barefoot trimming blog I follow. Posts some great photos and commentary.
The Horse's Hoof - They put out an online magazine that has some awesome articles.