Domegaia air-Crete domes

I recently came across the Air-Crete dome home while looking at natural building methods on YouTube.  This video got me very interested    There is a group called Domegaia that offers workshops and tools to build the domes, domegaia.com.  There is a forum on the site, unfortunately the community is not very big yet.  I would like to get a discussion going to bring together thoughts, methods, pros and cons and general information on air-Crete.  This appears to be a very promising form of low cost, low impact building.  That being said there are so many people more knowledgeable than I about natural building so I would love to know more!