I've been reading these threads, on and off, for a while, and I think it's a great idea.

Without wanting to be a prophet of doom, you need to be very careful about copyright for this project.

It's not enough to say that the contributors 'should take care of it' themselves.

Mudcat will also be vicariously liable if any copyright infringement occurs.

I don't want to spoil the party, but do check these things out.