There many great answers so i assume you've got what you were looking for. But i would express some perspectives on my own.
Internet is a very amazing discovery. A great tool for progression and fasten the activities and a worldwide communication. That's how such communities stand. But like anything else, there are cons and pros. Internet can cause the privacy becomes vulnerable. Each person needs privacy, value privacy and would do their best to protect it.
It's common to not give out personal information on internet sites and communities. Nobody wants to be too exposed. First and last name are part of personal information and many are uncomfortable to share it with the world of internet. Because you never know whom you can trust. It's not about just people that you might even feel they are good people. It's about internet spy and the possibilities that there's always someone watching you. A spammer, a con, an abuser anyone! So due that, people choose other related names or creative profile names for themselves! And some are also comfortable to share their true name. Like myself.
However, mostly there's always a private place provided by the websites for the members who establish further trust and relation so they could share any form of information they would like to.
At such communities like here. We look at each other by how we act,think,do, believe and prefer. We share true experiences, feelings and preferences. But yet we do protect our privacy lines and answer as much as we want it to be out.
There many members here that i can write more than ten pages about them. About who they are, how they are, what they like, what they'e done and what they've been through in their lives. We do learn things about each other but sometimes we don't really need certain information.
