I have used rtm for the past 2 – 3 years. I use it hourly to track tasks at home and have recently started with work. It is a fantastic and flexible system. When you first look at rtm you will see very lightwight task managment system and that looks abit outdated compared to new productly like flow. But when you build yourself a system and start using smart searches rtm really comes into its own. I have tried new task managment systems as they are released just incase one of them is better than rtm but nothing has come close.
The main downside of rtm is it takes time to get into it. When i introduce someone to rtm I always sit down with them for half a hour and go over how to structure the there tasks to get the most out of it. I am not saying that my system is the best way of doing it but it works for me and they can adapt it to there way of working. But it gives them a head start.
In a attempt to help out I am going to post some of the searches and processes I use with rtm.