Edited is my current site but it sucks so I'm making a new one called "Science Past Papers" with only Science Papers.
I link to this site a lot and so you should give me credit
Spam may be a problem but if you hire Moderators to work here that can IP ban users from the Forum, that won't be a problem. People just cannot be bothered signing up for forums like this and its often best to allow people posting privileges without signing up. Maybe not allow unregistered people to Post images or Upload to the server??
As to linking to your forum, I had already started on a forum of my own making before I was alerted to this forum here so this could be a slight problem maybe. I'll still link here though, no problems and I hope you can link back
And let trusted people only ftp to your server. Its a resource that is invaluable.