I disagree about trying to really 'protect' your idea. That's only good if you have a TON of money to go after anyone that tries to copy. And let's face it, there will be people to copy your idea.
How do you monetize the site now?? Is there a subscription fee?? Is there a membership fee?? If there is and you have 200 people in, then you are a genius. If there isn't I will guess that as soon as you DO put up a fee, you will have 2 subscribers... at best.
So, how do you monetize the site. It's THOSE PROFITS that people will buy into. By the way... how much of an investment are we talking?? 100's?? or is it into 1,000's of dollars (I mean each investor) because that would determine how far I go.
Outside of that... if you really need help... give your investors MY phone number. I will get them signed up and on side.
But seriously, if you need some help... PM me.
Hope this helps!