I too think that the TP runs should be dated as best as possible. I appreciate that it can be difficult to keep everything up to date.
One thing that I have found useful over the years is when someone posts how to search in the Matrix engine. I've had this bookmarked for a couple of years now:
http://www.flyertalk.com/forum/13303030-post4.html. I've always favoured a broad stroke explanation followed by core specifics. I think at times those that know what they are doing forget the tiny steps it takes to get the result, but it is those tiny steps that can be important in the future. Ultimately, people will learn but those early impressions make a big difference for the further down the road.
I am always in awe of the contributions in this thread and am constantly reminded what a nice little community it is
H