I used to check in on it once a week or so. As mentioned above, there was some good gen and I caught up with a couple of old mates through it. My only criticism is that there were far too many sub-sections, most of which were dormant. That gave the appearance of a dead forum, which it wasn't.
On all of the forums I look at, i only ever click on 3 or 4 sub-sections. Or in PPrune's case, one!
KISS is the appropriate acronym I believe?