05/05/2010
https://www.congress.gov...
"Prepared statement."
"So if these guidelines will not be enforceable, what tools does the FTC have to pursue social networking sites that are not adequately protecting their users' data?"
"To put it in slightly different terms, do you agree that when a company changes its terms of use or privacy policies, it would be best to require consumers to opt in to any new information sharing?"
"Good. So get to work. You have the authority, get to work."