Discount rates will vary based upon your own personal level of risk tolerance. For example, I might be willing to buy a risky stock if I think I'll earn 10% while my wife would need at least 20% before she'd consider it. What's your discount rate for the following types of equities? How did you determine that rate?
a) A risk free equity
b) A CD at a South American bank paying in their local currency.
c) A stock in a company that has a secure stream of income from a long term contract customer.
d) A stock in a company that has an interesting business plan but no real operations as of yet.