@sazius I would say that emotional outbursts are best kept offline. Among people you know who can tell the difference between whether your just fed up or simply an asshole.

Things like political agendas, sexuality and various other sensitive personal information are - until you feel confident in standing up for it - best handled through pseudonyms and that kind of role playing. In that case the privacy is not related to protecting content (unreadable data blobs) - it's about protecting the author from identification. (i.e. metadata etc.)