" social networking " - an identity crisis

Social networking sites such as orkut, facebook etc main intention is to connect with friends on the web.But i feel issues are still left in the open even though there are privacy options present in these networks, we make friends which we don't even know that they exist,or if they do this does not tell us how frequently are they using these social networks, even though issues are being addressed i feel lot more has to be done.Like for instance you don't get a reply back, your account gets hacked for no reason or no fault of yours, i wish orkut and other social networks puts up some statistic like the RSS for each profile so that you get a clear cut idea of your friends using these sites , Facebook having recent updates is a positive step in this regard.