'Open-source Ideas Blog' idea

I had another thought about an 'open-source ideas blog', a place where people can post ideas, that they are happy for other people to take on and act on, because they too busy or whatever!  But for anyone who is seeking inspiration they go to the blog, and they just need to post their proposal on how they think they can manifest the vision.  Others could then see and join, comment, make shizz happen.  Original idea dude can then sit back and be like, oh yeah, that was my idea, haha!