Three more companies dropped out of our database.  Consolidated Biofuel (CSBF.PK), Turbodyne Technologies (TRBD.OB), and US Energy Systems (USEYQ.PK) have all ceased trading.  Consolidated was in the biodiesel business, Turbodyne was trying to leverage an electric turbocharger, and US Energy developed small scale cogen projects.    Apparently none of these strategies were able to gain traction.     They are just a reminder that investing in the OTC markets is fraught with a significant risk of the complete loss of an investment.