There are many very real company's using this currency, Slysoft for one that we all know here at this forum take Bitcoin as payment. Many other companies do also, you can actually put Bitcoin into your Paypal account, the only problem is with the fluctuation of the rates, Like I said, I had the option to take a Bitcoin for 99.00 USD just a few months back and now its worth over 1,000USD. If you buy something its just like having a Paypal account, it deducts the amounts from your total worth. Your total Bitcoin worth can be whatever you want it to be, just buy as many Bitcoins as you like. Its a commodity, its value like other currencies goes up and down every day on the world market, whoever thought of this was pure genius.