Have you never asked yourself why there are 500 to 700 guests at a2k (at the
moment its 569) and they don't write a darn thing?
Those proportions are nothing new, IIRC you could see the same thing on the old site.
Lots are bots. Google spiders and the like.
Lots of others are Googlers. Followed a key word search here, found what they were looking for, or as often as not, didnt, and left. Compare: how many times do you look, for example, at an online news article? How many times do you feel the need to leave a comment? Once in fifty times, once in 100 times?
That's the same proportions you find here. They just clicked a Google link looking for some random info, which they might or might not be interested in for more than 2 minutes. 99% of visitors to any site dont come looking to invest in a community.
I dunno. I've tried to encourage comments on websites in the past (work stuff), and you could get 1,000 people looking at a page or downloading a paper or report without anybody writing something. It seems to be the nature of things.