Erm, but isn't the fact that Wikipedia actually is a pretty good source for very many things people are searching for on Google important? That's the difference between it and other linkfarms - I (as I'm sure is the case with many others) am very frequently happy to follow a link to Wikipedia, where I find the information I'm looking for. The same isn't true for other, lazier sites.

And isn't Google's aim to get you to the information you're looking for?