Privacy issues with social media !

Everyone on this planet should be aware when it comes to entering the Social Media for the first time, because some people they're sharing everything on social media without knowing the outcomes of that and it may strikes them back in the future.
And after I did my own spamming on the internet I found this article for you to know more about some downsides of using the Social media.
reference (http://www.whoswatchingcharlottesville.org/social.html)

Social networking sites can make life easier for spammers and stalkers

Another potential downside of social networking sites is that they allow others to know a person’s contact information, interests, habits, and whereabouts. Consequences of sharing this information can range from the relatively harmless but annoying—such as an increase in spam—to the potentially deadly—such as stalking.
While the vast majority of people using social networking sites do not pose a threat, malicious people may be drawn to them because of the accessibility and amount of personal information available on them.
Criminals can use information provided about a person’s birthday, location, routine, hobbies, and interests to impersonate a trusted friend or convince the unsuspecting that they have the authority to access personal or financial data. They can even use such info to guess your account passwords—which is why you should never have a password that uses the name of your pet, favorite band, hobby, birthday, or something else easily known about you. And stalkers will really appreciate your help if you post your daily routine and whereabouts online!
So, when deciding whether to post something, remember that the more information malicious people have about you, the easier it is for them to take advantage of you.