no emails in sigs.... there are V cards (under user control options) where you can publicly list your email... all you have to do to get someoen's vcard is go to their profile...

and no, there never will be a PM-ing system, because people would use it for hook ups and such...

it says download VCard but you don't actualy have to save it... just click on download and then when window's prompts you, click open...