The Five Pillars
Wikipedia is an encyclopedia, not a blog or a homepage. We write about whatever interests us, but we write to inform and educate.
Wikipedia has a neutral point-of-view. We don't take sides in battles, we just write about the battle and who's fighting.
Wikipedia is free. We share everything we write with the world, and we don't steal other people's writing.
Wikipedia is fair. We show respect for others and expect the same in return.
Wikipedia doesn't always follow the rules. Perfection isn't required, since we can undo anything. It's far more important to have fun!

Hello, {{{1}}}!

Welcome to Wikipedia, the Free Encyclopedia that Anyone Can Edit.
I see that you have discovered how easy it is to edit Wikipedia. We reverted your edit, because unfortunately it's not quite what we're looking for.
(but that's OK, everyone has to start somewhere!)

Let me tell you a little about Wikipedia. We've written over 900,000 articles (6,819,969 to be exact) on everything from Aardvarks to [[{{{2}}}]]. (I know you must be interested in that!)

That's more articles (and words) than the largest published encyclopedia, by a lot. We did it all ourselves, and it's free to everyone in the World.

I'd like you to join us, if you're interested. Unlike a lot of other places, we've just got five simple rules, and they're easy to follow.