Both guys and girls often suffer from this kind of problem.It's not enjoyable for guys if meeting is failed, especially on public, in front of other people.
Why should you continue communication with the person that you're not interested in?
Chatroulette enables you to share your thoughts or experiences with a new random person who doesn't know anything about you and whom you do not know.
Due to the fact that the video chat is anonymous, no one can know more about you than what you want to tell one about yourself.
And the girls don't want to impose relations to the guy; everyone wants the communication and acquaintance to start without any efforts, freely.
Social networking has not much solved this problem, because people communicating there are mostly familiar to one another. If you found someone in the chat, it means the other person is ready to communicate and get acquainted.