Peter Merholz advocates relinquishing control to customers:
Again and again, the history of the Web shows us the value of relinquishing control. Amazon’s customer comments were originally thought foolish by those who believed negative reviews would hurt sales. Instead, they increased trust, which drove more transactions. eBay’s open marketplace eschews centralized control of buyers and sellers, instead favoring a distributed management system where individuals rate one another. Not coincidentally, Google, Amazon, and eBay have all made available their Application Programming Interfaces (APIs) so that others can leverage their information in unforeseen and innovative ways.