4 unexpected things that Facebook knows about you

How much social networking site ‘Facebook’know about you? if you think you can answer this question,let me tell you there are many unexpected things that only Facebook know about you except yourself and you don’t even know this.
Facebook knows that what you like
If you have complaint that no one knows what you like, if you have Facebook profile then Facebook knows it better that what you like and what you don’t.
Facebook is capable to spot your face anywhere. Facebook can recognize your face: automatic tagging is a feature you can opt into, and it’s a straight-up admission on Facebook’s part that it can tell your face from all other faces in the world.
Facebook holds your credit card information
Have your ever bought an extension pack for some app like Farmwille on Facebook, then let me tell you Facebook has stored your credit card details
Have you ever bought a gift card for your friend or relative on Facebook, then Facebook will deduct money for that gist card on every birthday of your friend and your friend will get a birthday card every year.
It’s weird but true!!
Facebook knows who have a crush on you!!
Many of us visit our crush’s profile regularly and think that he/she doesn’t know about is as we don’t leave a trail of Like or Comment. Yes you are correct, your crush doesn’t know about it but Facebook knows, The site keeps a record of everything you type into the search bar, meaning it knows how often you enter the name of your high school nemesis or your ex-girlfriend.

Facebook keep a list of your interestWhen an ad is delivered to you on Facebook, it’s been chosen for you based on how you’ve used Facebook in the past. Facebook has a list of ad topics it thinks you’re susceptible to based on a record it keeps of every ad you’ve clicked on and when you clicked on it. That list of topics probably reveals a good deal about your interests.