How does it work? (P2P for the masses)
WikipediaP2P changes the way Wikipedia's links behave, but you just have to keep using wikipedia as usual.
This color means it's searching for that article.
This color means that it has been obtained from a peer.
If it can't be found from another peer, it will be opened from Wikipedia as usual.
In other words, after you have installed WikipediaP2P, just use Wikipedia as usual.
Why should I use it? What's it's purpose?
Using WikipediaP2P helps Wikipedia Foundation to save bandwidth and resources, and improves the experience in local networks (Universities, Schools or even complete countries).
This is an unofficial extension and not endorsed by Wikipedia in any way, it's just an implementation of latest web-technologies towards sharing of knowelege.
It's Open Source, Hopefully Wikipedia could see this project and consider implementing something like it.