11. Why is the topic social networking services considered controversial?

So far we mainly talked about how convenient and useful social networking services are how they seem to become an essential part in our lives. But, did you know, you can sometimes lose your job or even worse, not get applied to the job you applied for, because of something you posted or tweeted? Most people nowadays don’t think twice before they tweet or post. They post or tweet whatever that comes to their mind just to get attention. Well, we sure can get attention, and we think it just flies away. But, in some studies it is suggested that more than 80% look at a prospective employee’s social networking accounts before making a final hiring decision. Which means that the line drawn between either getting the job or not getting the job can all come down to what you post or tweet. 

The thing that people don't realize is that what you post or tweet most certainly reflects your employer, your friends and your family and even worse, your job. Social networking services has made everyone lose their common sense, manners, and we somehow have forgotten how to respect each other’s opinion. Some now lack in the ability to talk face to face. 

Are social networking services that necessary, when we humans are becoming less human like? In the past humans didn't have much hard days without social networking services. Our parents say they didn't need such things. 

Social networking services may have become much useful in our everyday lives, now, and it may help us in many ways, but do we really need sns?