Daniel Gold, the author of Evernote: The unofficial guide to capturing everything and getting things done, has managed to write a book that ties Evernote and Getting Things Done (GTD) together. I personally found the book to be a great combination, and had previously tried to make the connection based on articles I had read. Gold managed to add clarity to the subject. Basically, Gold describes in roughly 63 pages how he implements the GTD system using Evernote.
I have just finished reorganizing my Evernote system to a system similar to what Gold describes. While reading this book, I learned about some features I was not aware of to include linking notes together, creating Master Meeting Agenda using note linking, dedicating a single note to a single task, stacking notebooks, and improved saved searches.
One of the most clever ideas was to link notes together. By doing this you can have a master agenda, and link detailed notes to it. Another idea was to create separate notes for each task. By doing this you can leverage the GTD system to check off tasks as you complete them.
Gold also recommends a number of programs and hardware such as the Fujitsu ScanSnap S1100 and a very useful program Followupthen.com. FollowUpThen.com is a program where you send messages to be returned to you at a later date as a reminder. You can send a message for a one time reminder or recurring reminders. Can be useful to provide follow up reminders for performance support feedback.
If you are interested in the GTD system and Evernote, I would recommend taking a look at this book. A number of great ideas. Gold also provides downloadable templates you can use to create Master Next Action Notes, Master Project Notes, Master Client Notes, Master Agenda Notes, and Master Company Notes.