With the influx of new people, a lot of the old threads get "revistited" because they've missed previous posts.
With the number of people participating, there is now a much wider spectrum of experiences then in the past. Where at one time I was about the only one that had been involved in diverse and far flung parts of the business, now there are a lot of others that have also been around enough that my inputs would be pretty much redundant in themsleves. I frequently have a different way of looking at things and I felt I could add something. If I see something I disagree with or I think needs a little more variety/clarity I try to contribute.
dun