I use http://www.followupthen.com/ as my primary tickler system with Evernote as my reference files and lists area. I do not use The Secret Weapon although I have watched all their videos and considered changing some of my tags to their tags.
Originally Posted by mattsykes
As a side note I like using tags that begin with @ for contexts and I put a period in front of project tags. This way I can search for all contexts or projects or just one. I like the number action tags and had consider using them, but I realized that GTD really just uses two action tags (next and someday/maybe). I've added today, but I'm not sure that's really needed.