Most of the people that made the Mk6 section busy have moved on to Mk7's. People may view posts, but if they have nothing to say on the topic, there's no reason to reply.
I agree dubber36, and many of those people would have been the more active Mk6 members when they owned their Mk6's. That's why it seems quite quiet in the Mk6 section compared to a couple of years ago.
I'm no longer a Mk6 owner. I do still visit most days though, and if I've anything I feel is useful or relevant to say, I'll contribute. I also contribute in the Mk7 section as you do, although I'm not a Mk7 owner either; still VW though.