Ignoring people should make their threads not display.

[Shironeko_Narunyan]

I think it is bad because whilst there's a few legitimate 'trolls' to speak of, sometimes someone being a 'troll' doesn't always negate the validity of the points being raised and makes for an interesting discussion.

You're arguing as if people demanded the power to ban people from the forums.
They don't. They're asking for a way to filter out people they can't stand. Whether that be trolls, or just people who express themselves in certain ways, whatever the reason, it doesn't affect anyone but them, and them alone.

Ignoring someone on the forums should completely hide them from you, and you from them.
The same needs to be implemented in game.