http://www.hostelwunderbar.com/
Hostel in Panama recommended on the HUBB (horizons unlimited) as a place to start a crossing of the Darien Gap in Panama.
http://www.earthlodgeguatemala.com/
An eco lodge and avocado farm built and run by a Canadian American couple outside of Antigua.
http://www.hedonisiahawaii.com/
Work exchange 2.5 hours or pay $35 - $40 a day. Eco-hostel, solar showers, outdoor toilets, the whole nine yards. :-)
http://www.hostelbookers.com/hostels/scotland/edinburgh/3716/
Could be the cheapest hostel in Edinburgh, £6 a night mid week.