Hi Dominik, Sadly the developers at Oxwall have overlooked this exceptionally important feature. The end result is that Oxwall is unsuitable for hundreds (if not 1000's) of sites that deal with adults and minors, or material that could be considered "sensitive" to some.
Here we have a site that builds on friendships, but allows everyone to read, or see everything. In other words, everyone is your friend whether you like it or not.
Oxwall have virtually built a boat without a rudder!
For Oxwall to be accepted by a vastly huger audience, they must address this problem and address it urgently.
Facebook allows you to mark everything you do as Public, Private or Friends Only. So too does Elgg, Oxwalls biggest competitor. The pity is that Elgg lets us down in other ways and with just a little tweaking on Oxwall's part it could easily become the premier social networking script. I don't think it's reached that status yet by a long shot, but it could be done very soon if the developers concentrated on these issues instead of the mobile version which is equally useless if the computer version is lacking.
There's no use asking for it to be done on the wishlist site. It's choked with Facebook emulation requests and requests for things that have already been implemented. That site needs to be cleaned up to be of any future use.
John