Ask HN: I made a list of Ruby / Rails learning resources, should I open it up?

I made a list of Ruby and Rails resources - http://www.learnrubyandrails.com and it has gotten good traction.<p>I am thinking to open up the repo and accept contribution by pull requests, or I should keep it as very moderated as it is now - I am the only one adding resources. My concern is that if I totally open it up there may be too much spam or people promoting their own mini-tutorial or ebooks, and it could out of control.<p>I also thought about putting up / down votes like HN does, but again there is concern of spamming.<p>what do you think?