It depends. If people want to vent their non-EB related discussion why do it on an EB Central board? Does that make sense? Perhaps, if you enjoy the company of this community but still doesn't quite make sense.
That's exactly it. Instead of going to a different forum for everything, sometimes it's nice to discuss something and see the opinions of people who share a common interest other than the topic you are discussing. I see Mato has added a general Discussion board, so we can see how well it works out.