SMALL CHANGE: Kurt Huang is CEO of BitPass in Palo Alto, Calif., one of many companies trying to

SMALL CHANGE: Kurt Huang is CEO of BitPass in Palo Alto, Calif., one of many companies trying to make changes to Internet business. Charging small amounts for things online was cost-prohibitive with credit cards, but new micropayment carriers are trying to change that because they think it will enable new, independent online material.