Bitcoin digital payment parameters gained 1400% against the USD in 2012-so far this year - and this same currency is again - by far - the best performing currency. As an investment strategy "banking" Bitcoins should produce a nice return on investment. There is no minimum amount to buy.
"Affording many conduits to purchase is just 1 realm of possibilities for this new digital currency". There is increasing demand for Bitcoinn via the Cloud & companies that are accepting this payment form.