just to give you an example.. all the big dating sites (match.com/eharmony.com) have a secure calling service and they charge money for a user to be able to use

just to give you an example.. all the big dating sites (match.com/eharmony.com) have a secure calling service and they charge money for a user to be able to use it... now on twitter which is again a social site, you can do that without giving much away.. and see how it goes.. before actually going on a date and exchanging real numbers..