[e_i_pi_2]

Agreed with this, rewarding users doesn't make much sense in this context, I don't want to know what other users are publishing I want to know what's the best result across the internet.

How much will "wikipedia" be using this search engine? They should probably be on the first page of a lot of queries but they wouldn't ever be using this.

It's definitely a cool idea but I wouldn't call it a search engine, maybe something some "community search engine"? Definitely a good use for this similar to stackoverflow for teams where you can bias results towards your own network