I am surprised that there hasn't been a posting here yet. apparently Mike passed away Thursday, although any further information is unavailable.
He an I banged heads on more than one occasion, which can happen when strong willed and passionate people. I had a great deal of respect for his knowledge and commitment and his willingness to share.
He will be missed in many ways by many people. I am certain there are thousands whose live's were touched simply by his prolific gifts to this and many other online groups and forums.
I will personally miss our jousts as well as his being my regular source of information with regards to all things acoustic.