It includes simplified tools to let users "view as" other people (a feature that already exists) to see whether they've hidden or displayed posts the way they wanted. Want to keep some Facebook activity hidden from your grandmother or your boss? This tool is for you.

Lessin said new messages will begin appearing on users' pages, explaining the changes as well as more clearly outlining how existing privacy tools work.

He said Facebook will also be killing a little-used "Who can look up my Timeline by name?" tool, saying new features will make doing so easier.