My name is Trollderella, I came here looking for information on the 'Endurance', found that I actually know more about it than is listed here, and got hooked immediately into adding it! Great job folks, what a cool idea!
The three content policies: Wikipedia:No original research, Wikipedia:Verifiability, Wikipedia:Neutral point of view. Also useful as guidelines are: Wikipedia:Reliable sources, Wikipedia:Cite sources.
Jimbo Wales claims here that " 'fame' and 'importance' are not the right words to use, they are merely rough approximations to what we're really interested in, which is verifiability and NPOV. . . Consider an obscure scientific concept, 'Qubit Field Theory' -- 24 hits on google. I'd say that not more than a few thousand people in the world have heard of it, and not more than a few dozen understand it. (I certainly don't.) It is not famous and it is arguably not important, but I think that no one would serious question that it is valid material for an encyclopedia. What is it that makes this encyclopedic? It is that it is information which is verifiable and which can be easily presented in an NPOV fashion. (Though perhaps only as a stub, of course, since it's very complicated and not many people would know how to express it clearly in layperson's terms.)"