First let me tell you all that i love the bitcoin concept. I wont detail the reasons as others have already did this numerous times, however i have a little concern.
How is the transaction chain gonna scale if at times the whole earth use it ?
It would becomes really hard to have and store the chain, and as well, could become hard to "keep up" for the network if transactions are created faster than it happens. I know, seems hard, however i work in finance and see daily algorithm doing like 1 million orders daily, making huge logs and huge database of which only a fraction of information is finally kept.
What are the technical solution that can be implemented to counter this eventual problem ?