Nature Friends -
http://www.nfi.at/
I'm thinking about joining this group. Anyone have any info/thoughts on this organization?
Apparently one of the largest NGOs in the world with 600000 members. They do environmental advocacy, but I'm mainly thinking of joining because I stayed at one of their cabins this weekend. They have 3000 cabins/hostels around the world and it was $8/night. It is more European (founded in Austria in 1895) than American, but the few facilities they do have in the US are in California - where I am.