Thank you. And regarding the recent rumors of possible SEC enforcement action against numerous entities in the space (presumably based around unauthorized security offerings), the following link is rather apropos:
http://apps.americanbar.org/buslaw/newsletter/0014/materials/investmentch2.pdf
It’s rather short and well cited. In particular, “Investment Contracts and Instruments Commonly Known as Securities” on page 5 is good. I am not a lawyer and thus will not interpret this document here. However, it appears to be a good resource for anyone interested in the definition of a security, and how such a definition may apply to the various offerings in this space.