But there is a greater question. Whom to trust. In today's age openness has increased and with that we have put our guards down. We rarely hesitate while talking to people we meet everyday. We feel "what is the harm ?"And then get let down. Maybe it is time we think before sharing information. In many cases, it may not really harm us. But does everyone really deserve to know your personal information if they don't care? I would say not.
After much reflection, I revert to the old fashioned view of not trusting easily. It takes time to build.
This can also be adapted in the following manner :
"Don't share information with people whom you don't trust/like completely what you won't write on a social networking site. It may not always information which would devastate you if leaked but even the soft beautiful innocent secret thoughts."