People here's a nice thing for this great site.
You could make,as your site is written in php,a hash string for every page.So when you get
appropriate MD5 hash string you get access to some hidden files or hidden forum or smthng else
i mean this is great thing for newbs and others to understand how site works and etc..

byez

Grivier

???

juas

Come on,never seen this have you guys??
FE:
You start at main page with given MD5 hash,as you move thru other page(cohallenges or forum)you get changed MD5 hash(could be multiplied,xor-ed,etc.)
But when you come back to main page,via backspace or Back button,there should be a link(if you got matching with one which is given)to the hidden forum
or essays etc. Good thing for ones who wants to learn smthng and having fun,

byez Grivier

You mean hidden toturials?

It could be a great idea to have tutorials written by all the users ( don't get me wrong, i like yours tutorials tbs ) who solve the challs but keep it hidden to who didn't do it.

Has never happen to you to solved a challenge and didn't understood well why?

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Add:
My English is PoWeReD bY Google..