do you think sites like facebook can actually lower some peoples self esteem?

[Royce]

Yes, being member of a social networking site like facebook can definitely lower a person's self esteem.
This is because people tend to exaggerate the positive in their lives and tend to only post the most extreme things that have been happening to them.
If your life is not as wonderful or extreme as what you see on facebook then congratulations you are a normal person!
So, yes, definitely paints an incorrect picture of life.
And an interesting question to post, especially around Valentine's Day when so many singles are reminded by many of their friends that they are alone, for now.
Well, you all are not alone in being alone. So let's some of us get together!