I noticed a mild election related spat by two (more or less) left-wing bloggers. One outed the other as a list candidate for a political party and gave their list position - which wasn't appreciated.
I'd agree this would be unethical if the "outer" knew the "outees" identity from personal discussion or by knowing them offline, etc.
However, the person being outed announces in their profile the city they live in. They've also announced that they are a list-only candidate. And they've repeatedly mentioned their gender.
The thing is, their party has only one list-only candidate of that gender from the city they live in. This isn't difficult to find out from the parties website.
I guess it's harder than one thinks to be anonymous...
(This post would be a lot more fluent if I revealed the identities and blogs of those concerned - but I wouldn't be that nasty).