This is a few days old now, but if you haven’t already heard, Google gave Wikipedia $2 million dollars to help with its never-sated appetite for bandwidth and “increasing … multimedia needs.” Here are two of the Internet’s most important websites getting together, and I’d have thought it would’ve been worth more than a small roundup on Techmeme.

Reported the Wall Street Journal on Feb. 18:

Google Inc., the Internet’s most profitable company, is giving $2 million to support Wikipedia, a volunteer-driven reference tool that has emerged as one of the Web’s most-read sites.

Good.

Wikimedia Foundation, owner of Wikipedia, said Wednesday that Google has donated $2 million to further develop the popular encyclopedia and other projects.

Awesome. Right.

Jimmy Wales, Wikipedia’s founder, broke the news on Twitter on Tuesday, followed by a formal announcement from the nonprofit organization.

Twitter, well played.

Google co-founder Sergey Brin, in a statement, called Wikipedia “one of the greatest triumphs of the Internet…this vast repository of community-generated content is an invaluable resource to anyone who is online.”

You bet. Of course. But why now?

To some this raises the question of what Wikipedia might do for Google; after all, a sizable donation could be said to create the possibility of a Conflict of Interest. Previous donations, such as that from a conspicuous Silicon Valley VC and partner of Elevation Partners (not Bono), have raised eyebrows. And everyone knows about Jimmy Wales’ occasional willingness to cut special someones (and Google is) a break — at least until the community gets involved.

But this question is probably backward. Wikipedia already helps Google, and by helping Wikipedia, Google helps itself.

Google depends on Wikipedia to provide topical, authoritative results at the top of its search results pages (SERPs, in SEO-speak) on more subjects than any other website. One occasionally-discussed, conspiracy-tinged theory has Google purposefully privileging Wikipedia precisely because it “cleans up” their search results. That’s possible.

But that isn’t needed to explain Wikipedia’s prominence on Google. It guarantees, for a range of topics functionally as vast as Google searches are regularly performed, an end result that is usually informative, free (as in beer, but liberty too) and not-for-profit, “not evil” and reliably neutral in a Switzerland kind of way. From what we know about Google’s recommendations for webmasters, no website is so organized as well around the Google algorithm as Wikipedia, whether we’re talking about software, community or purpose. It’s basically Google’s perfect website.

Yeah, I would give Wikipedia $2 million, too. And even though it’s positively swimming in cash, I’d probably give it some more.