My take on any ‘system’ that helps you get organized, is similar to Jeff Bezos’ take on the essential element of reading – “you have to capture the essential element of a book, which is that it disappears when you get into the flow of the story. None of us when we’re reading a book think about the ink and the glue and the stitching. All that fades away, and you get into the author’s universe.”
(This was from his interview with Walter Mossberg in All Things Digital – http://online.wsj.com/article/SB121261272441346269.html?mod=2_1582_leftbox)

Similarly any system that helps you get organized should ‘vanish’ in the process. If people spend time managing the time management system, then more likely they will not use that system.

I used an early version of RTM and i had to spend more time mastering it than managing my time. So, using basic principles of GTD i deviced my own system using Backpack and it works pretty well for me.

And I am sure you guys would have taken this (product becomes so easy to use that it vanishes into background) into account while designing your product.

All the best.

thx
Mads.