sharing vs. following
if you start sharing with someone your profile is shared with that person (respectively the owner of this account).
in my opinion this is not necessary. there should be an option to follow an account without sharing your profile.
i think there are 2 options to handle this:
1. allow users to create one profile for each aspect (problem: which profile is shown to people which are in more than one aspect?)
2. differentiate between sharing and following => sharing means also sharing your profile. following means sharing without sharing your profile.