Hi.... I'm interested in building a website that would store very confidential information, such as credit card numbers, passwords, etc.
Instead of spending thousands (possibly tens of thousands) on a custom system that is secure, would it make sense to rely on Dropbox? So -- instead of storing my users confidential information on my own database, wouldn't it make more sense to sync up to Dropbox and store the data there on a per-user basis? Each user would basically have to create a Dropbox account at which point we'd retrieve that data directly from their dropbox, then close all connections.
Does that even make sense? 
T
