Clearly divulging whom you are to complete strangers makes you vulnerable to being hurt or ridiculed or attacked. So what? What do you have to fear from people whom you will NEVER meet who have zero control over you and wouldn't recognize you if they passed you on the street? People leave internet social sites because of other people! It amazes me how disparate words from a variety of disparate sources can drive people away from anything or any place. Does it amaze you too?
