Firstly... due to some technical problems with Google groups i have changed the name of the group from NFC-owners to NessebarFortClub
You can visit the group via the following link or apply for membership:
http://groups.google.com/group/NessebarFortClub
Spudhead, i completely understand where you are coming from, and i thought long and hard about it... but this group is not listed in any search engines nor the google group directory so people browsing the internet cannot find this group or its information.
I've completely taken on board your request for identifying if people are owners or just "nosey", and the only solution it offers is a question during membership stage, this could be 'Please identify your name and apt no' and keeping a register, but.. i don't have a list of 'who owns what' to check, so its pointless. Anyway it is now in place.