Collaborative Sciene Platform. Why not?
As a student of Math, I know that when you work in a group of people and everybody contribute ideas it flows better. It's like a brainstorming, and when you are stuck in a proof, that's amazing.
So, why there is not some kind of forum where, for example, mathematicians from all over the world are working in a problem? It could be a famous problem.
I know there is this issue of "Who would be the author", but it could be all of them! If this is serious, to have an user you could prove your identity. Also, if you check that thread, it will be logged, so if you publish it by yourself, there is a proof you could have steal some ideas from there.
I don't know, but I see this exciting. There would be minds all over the world discusing problems and proofs, trying to solve something really great.