The website is a wiki, you are extremely welcome to help improve it by editing it yourself.
Contacting the Smoothie community
There are many ways to contact the community :
[smoothieware.org] The IRC channel, #smoothieware on the freenode servers, with more than 100 active members, is a great way to get a quick answer. Try to ask your question there before asking it elsewhere.
If you have questions, complaints, ideas, want to collaborate etc, you can also contact email@example.com directly.
You can find the source code for the Smoothie firmware here : [github.com]
Instructions on how to compile it is here : [smoothieware.org]
Instructions on how to debug it using GDB via a serial cable : [smoothieware.org]