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.
Something you have made a commitment to read or review that will take more than 2 minutes. Examples include magazines, proposals, brochures, etc.
The collection bucket for everything you have committed to read or review.
Any input that has arrived in your world for which you have not defined the meaning.
The next defined physical, visible action you will take to advance some purpose.