Gliffy - Create diagrams online
I was looking for some good tool to make an illustration for workflow.
Gliffy is one of the simpliest online diagrams builders. You can create illustration for your process, share it online with your friend and work with them on one file. If your process is changing in your team and is improved still you need to use Gliffy. If you want to build it once and make it with “idiot friendly” tool just use Gliffy :)
With Gliffy you can make UML diagrams and Wireframes also. That makes this tool very universal. Created diagram can be saved as PNG/JPG or even exported as Gliffy file what gives you big spectrum of possibilities in future ( you can add diagram on your webpage or in your documentation/manual).
Check Gliffy by yourself!