There are situations where it's useful to use a real name; it's come up for me in directly programming-related projects, where having my name attached to commits is useful for resume purposes, and having the same name attached to the commits as the comments gets one taken seriously. And if I ever am getting a game published, naturally I'll want to promote it using my real name on BoardGameGeek, etc.

But even then, separating the various personae into different identity chains is useful.

There are arguments floating around that say if you use a pseudonym you're a [low-status person]. As such, anyone with a real name will find it easier to accrue status.

(Also, there's nothing stopping you from using actual anonymity measures if you have to say things that would really cause problems if traced back to you - but then, why aren't you using them already?)

There you go. Perfectly consequentialist.

I follow much the same practice as VAuroch, of course, but this argument sprung into my head fully-formed on reading your comment.