Facebook, just like any other website, makes money based on ads. These ads often popup in your news feed, or on the right side of your Facebook page.
Most of the times these ads are relatively harmless, however, other times they can be quite embarrassing and irritating to see and be seen by someone else.
Facebook chooses these ads specifically for you based on what you do on Facebook, and the guesses Facebook makes based on these choices. So, in principle, by controlling these preferences, you can also control which ads you get to see.
To control these preference, just follow these steps:
With these easy steps you will be able to remove any preferences you don’t want to see ads for. Facebook can still show you embarrassing ads based on certain other preferences. So you will have to be really careful about remove all the unwanted ones. Have fun.