Or use a secret skype if it is necessary... A lot of streamers use skype to provide content of them interacting with others in an interesting way (and skype is pretty good for this without the hassle of ventrilo, mumble, teamspeak, or whatever alternative).

I don't see why more of them don't make token skype accounts regularly. It isn't much of a hassle and it raises the security bar quite a lot compared to always using the same account.