Off topic, but I have never understood Wikipedia's intense drive to rid itself of anything interesting or unusual or esoteric. It's text in a database, you're not running out of space, nor are you diminishing the quality of other articles!
A printed volume has limitations that do not exist in a database or a filesystem. A wiki encyclopedia can easily preserve all information ever added to it, and still present it through as many interfaces as it likes.
If articles are tagged with enough metadata, it would not be extraordinarily difficult to produce all of the following automatically, with no further human intervention: abridged dictionary, unabridged dictionary, single-volume encyclopedia, multi-volume encyclopedia, single-disc encyclopedia, all math and science, all history, all art, all art minus the webcomics, all meaningful human knowledge, every last bit of trivia ever recorded, and everything written by anyone named Steven or Stephen.
It could be like moderating an entire library with the Slashdot system and then setting the default browse level to +4 or +5. But instead, the moderator-tyrants delete anything that they believe to be (-1, unimportant), and they can't be effectively metamoderated by the community.