Throwaway accounts / anonymous posting / temporary personas

Edit: whoopsie, already being discussed here: https://tildes.net/%7Etildes.official/2x3

This is tangential to this post here about NSFW/controversial content. Sometimes one needs to make a confidential post detached from their own identity (say for example about a psychological problem or advice on an event where the OP wants to conceal real identities), and most places one needs a throwaway account. I think it'd be nicer if we allowed people to make posts detached from their main accounts w/o having to create new throwaway accounts. It might be possible via allowing a certain number of "personas" (i.e. a couple names one can allocate and use as nicknames), or via allowing to post anonymously (i.e. hiding the poster's account name, not w/o one), or allowing personas but temporarily and randomly generated names. What's you thoughts?