Then there is the issue of users' aversion to change, and the inevitable learning curve that comes whenever user interfaces and functionalities are adjusted, Sullivan said.

But, as described, the privacy controls being introduced should be "a win for all Facebook users," he said.

The changes, which Facebook detailed in a Tuesday and in its , include placing "inline" privacy controls next to every piece of information and post on users' profiles.

By moving the settings from a separate page right next to the items people are sharing, Facebook hopes people will use them more often.

Facebook will also allow users to alter privacy settings after content has been posted. And people will be able to review and reject photos and other posts they have been tagged in, whereas currently they appear instantly on their profile wall.