If I had more time I would read these posts and papers carefully and write about them here.
The Same-Origin Policy
Eunsuk Kang, Santiago Perez De Rosso, and Daniel Jackson. paper 
Purposes, Concepts, Misfits, and a Redesign of Git. pdf
Re: Wikipedia and scientific literacy/information diffusion, perhaps this is relevant:
"Amplifying the impact of open access: Wikipedia and the diffusion of science"
paper
How a 29-year-old built Odyssey, a vast network of college students happy to fuel multi-million dollar marketing campaigns for peanuts. post