You've already determined who can view your timeline (see
step one), but you can also block friends from adding to your timeline
and review photos someone attempts to tag you in via the Timeline and
Tagging Settings. The only two options for "Who can post to my
timeline?" under "Who can add things to my timeline?" are Friends and
Only Me. To enable review of posts your tagged in before they appear on
your timeline, click Edit to the right of the entry and select Enable in
the drop-down menu.
Under "How can I manage tags people
add and tagging suggestions?" you can enable the feature that allows you
to review tags people add to your own posts before they appear, set who
besides the normal audience sees the posts you're tagged in, and decide
whether tag suggestions appear when photos that look like you are
uploaded.
To prevent Facebook from suggesting tags when photos that look like you are uploaded, set this option to No One.
Step five: Don't let your apps run amok
Some Facebook apps grab all the permissions they can, including access
to your information and the ability to post photos and status updates
"on your behalf." For example, the IFTTT app lays claim to your complete
profile and all your activities, as well as some of the profile and
activities of your friends.
Facebook apps such as IFTTT require access to your entire account and some of your friends' information.
To review your Facebook app permissions, click Apps in the left pane of
the Account Settings window, choose Edit to the right of the app's
entry, and either change the app's visibility via the drop-down menu, or
click "Remove app" at the bottom of the entry. You can also click
"Report app" to let Facebook know the app is spam, inappropriate, or
requesting too much information, or to contact the developer to report a
bug or abusive content, or for another reason.
Report an app to Facebook as spam or otherwise
inappropriate, or contact the app's developer via the "Report app"
option in the app's settings.
To prevent other Facebook users from volunteering your information to
the Facebook apps they use, click Edit to the right of "Apps others
use," uncheck the categories of information listed, and click Save
Changes.
Step six: Opt out of Facebook ads
Facebook currently doesn't let third-party apps or ad
networks use your image or name in ads, but that may change in the
future. To opt out ahead of time, click Ads in the left pane of the
Account Settings window and choose Edit in the Third Party Sites
section. Select "No one" in the drop-down menu under "If we allow this
in the future, show my information to" and then click Save Changes.
To
exclude yourself from Facebook's social ads, click Edit in the Ads
& Friends section, choose "No one" on the drop-down menu next to
"Pair my social actions with ads for," and select Save Changes.