The ability to pay for goods and services is the only way Bitcoin will develop into a viable currency.
Im usually not into blog spam but this is a good read.
http://samablog.robsama.com/?p=5559Basically the tipping point is when amazon accepts bitcoins straightup. I do see this happening in less than a year. What attracts big business to accepting bitcoins is their transaction costs they pay to the credit and debit network dissapears. The transaction network becomes the bitcoin network. I also see bitcoins going onto phones to be transfered over rfid or qr codes...