You can browse all the published concept maps without signing in. If you'd like to create your own concept maps, all you have to do is
sign in with Twitter.
It's free!
For knowledge workers, there is a lot of work to do defining our work before we can start actually doing our work. The 5 phases of workflow is the GTD model for capturing, defining and doing our work.
The habit of doing something as soon as it shows up if it will take less than 2 minutes. The idea is that this is roughly the point at which it will cost more to manage the item in your system than to just do it.