One System

Trent, over at The Simple Dollar, has a great post on his GTD system. He shows, with pictures, every step he uses to collect and process all the information in his life. In the intro to Getting Things Done, David Allen writes "...that there is no single once-and-for-all solution. No software, seminar, cool personal planner, or personal mission statement will simplify your worday or make your choices for you..."

I think that's why GTD is such a hit. It's a collection of some previously used productivity ideas, tweaked into a system. Best of all, it's open sourced. You don't have to buy a GTD computer or GTD software to make it work. Browse online and you'll find hundreds of applications both analog and digital folks use to get their things done. I mostly use a notebook, index cards and my Google Calendar.

Trent uses a bit more digital, but Rememebr The Milk and Google Notebook are awesome tools.
That's another thing that's great. I could (and have) tried different iterations of my system. It's okay to tweak, just don't do it for the sake of switching. The most important aspect is if it is working for you. If things are slipping through the cracks, you should investigate changes.

Remember: it's not about the tools. It's about getting your things done.