You're off to a great start. I've got a suggestion but I don't know whether or not it can be implemented:

• I think it would be most useful if the subscription portion of the program could be implemented on PM in the same way as our "Personal Nodelet". Where there would be a checkbox for "add current node to subscription list" link or button. It would be extremely easy, intuitive and convenient.

I really like the suggestions Blakem made about giving thread depth levels too. Sometimes I find that a top node may not appear to be of much interest (perhaps just from the initial subject or title), but top level nodes with greater depths tend to include interesting offshoots.

I find it difficult to use the date oriented approach as I'm usually interested in tracking thread by topic/content. I don't mean that as a criticism as I'm sure some people would find it useful. Kudos to you! This is a very difficult project to tackle.

--Jim