being able to vote up / down on forum thread and answers (eg. stackexchange)

It would save a lot of time, to find the right answers, to skip the useless comments.

Its weird in 2015 to don’t see this basic feature implemented in such forum.

I don’t understand what you are asking.

Hi John,
I assume leuis is asking for an individual post rating system (Thumbs up/down) to help determine which posts are helpful and which are not within any topic.
Edit: Also the ability to rate individual topics.

Kind regards.

That, I presume, would be a function of the board software. One would have to contact the board software devs (not Comodo) for this.