1. on my old voicemail, even if i knew i wanted to delete the message before hearing it, id have to wait until at least 2 seconds into the voicemail. i couldnt just hit 7 as soon as it went to it. With you mail i can delete em all without even calling in, how awesome!
2. knowing who called even if they didnt leave a voicemail
3. no, sharing is actually of little use to me.