Palo Alto is home to about 60 startups, including Facebook but more importantly, MC Hammer's DanceJam.

Fred Wilson and Union Square Ventures funded at least two of these 76 startups, Zynga and Disqus.

World-changing startups such as FriendFeed and TechCrunch favorite Mint sprout in Google's Mountain View shadow.

Our favorite startup in midtown Manhattan is obviously Ladies Who Launch.

Joost, the online video site started by the Skype founders inhabits an office in downtown Manhattan. For now.

There isn't actually a zoning law against useful vowels and consonants in Seattle, yet still among the startups between Cherry Street and Jefferson Street: Askablogr.

Rafat Ali of PaidContent parent company ContentNext Media legitimizes Santa Monica's startup scene. Then there's Jason Calacanis's year-old "Google-killer" Mahalo — which will pay you $10 per hour to write Wikipedia entries from your dorm room or trailer.

As goes Yahoo, so go the startups in its Sunnyvale. Jiffle?

You've heard of Austin's Famecast, no? Oh. It's serving up the world's best new artists apparently.

Vancouver's startup scene is a pretty cool scene and doesn't afraid of anything.

Google, either encouraging physical fitness or zero population growth, offers the above helpful suggestion when mapping the route from Chicago to London.

Screw air travel: Google suggests you get out and swim [Upgrade: Travel Better]

Internal IT Group - Buildings Pi, E, and C are older than the main buildings but are still part of the Googleplex. They house the internal IT department and employee e-mail system for the campus. It's the nervous system that eventually leads to the cold, merciless, and yet non-evil brain of the entire operation.

Building Pi - Houses a replicant factory (rumored).

Legal and Audit - Home of the dreaded SOX (Sarbanes-Oxley) regulatory compliance audit team.

Sales - Cause Google gots to get paid.

Omid Kordestani's Office - At one point, the non-engineering parts of the Googleplex were called Omidistan, in honor of head sales guy Omid Kordestani.

Cafe 7 - This building group's feed station.

Security at Parking Lot Entrance - The Main Campus (buildings 40, 41, 42, and 43) has security at every parking lot entrance. Designated "Interview" parking serves the hordes of applicants late to HR meetings because they can't find spaces. There's also a covered parking garage underneath the main campus; that's why you don't see too many nice cars in the main lots, as people with the fancy rides don't dare park them outside in the elements. You can always valet your car, but it takes forever to retrieve it.

Adwords - Cause bloggers gots to get paid. Very slightly paid.

Sheryl Sandberg's Dominion - Sandberg is an ex-government official (she was chief of staff for the head of the Department of the Treasury). She's the connection to the government speakers and high mucky-mucks who visit Google periodically.

Statues Outside Building 45 - Your guess is as good as ours. Circus guys? A celebration of creativity? We're going with circus dudes.

Pintxo Cafe - From Yelp: "Pintxo simply rocks. They've got an awesome selection of foods, such as smoked salmon, steaks tartare, shrimp cocktails, lobster bisque, french onion soup, etc. The emphasis definitely is on quality over quantity here, just the way I like it. But since this is a Google cafeteria, it's also all you can eat anyway! Perfect! I'd eat here every day if only I worked closer to Building 47."

Commuter Bus Office - The people who run the Google San Francisco commuting bus are housed at 1550 Plymouth. The Plymouth Cafe is also near here.

Cafe 150 - Another spot for tying on the all-you-can-eat feed bag.

Adsense - You don't really think bloggers gots to get paid, do you?

And now let's take a closer look at that aforementioned brain of Google, located in buildings 40 through 43.

Live List of Searches - One of many in various lobbies.

Google Master Plan - Version 1.0, currently erased and rebooted.

Swimming Pools - Miniature aquatic delights.

Eric Schmidt's Office - Schmidt is on the second floor of building 42. He's been there for a while. At one point, he moved to a larger office in 43, but executive assistant Pam Shore (the most important woman in his life) thought 43 was too busy. So Schmidt moved back to his tiny office in 42.

Volleyball Courts - Fancy a game, punk?

Dinosaur! - The T-rex waits behind chain link. For now.

Massage Parlors - Happy endings guaranteed.

Charlie's Cafe - Named for ex-Google chef Charlie Ayers, who previously cooked for the Grateful Dead.

"Green" Building - Building 43 is a "green" building, with recycled carpets, sustainable wood, and recycled blue jeans used as soundproofing materials.

Offices of Larry Page, Sergey Brin, and Marissa Mayer - Page, Brin, and Mayer have their offices on the second floor of building 43. They're a cozy bunch, them three. The executive conference room is also on the second floor of 43.

SpaceShipOne Replica - Oh yes, it's just a replica. As far as anyone knows.

Of course, this map can always use more annotations. Send your corrections, expansions, and personal reminisces (plus photos) to tips@valleywag.com, and we'll update the map as needed.

To recap: Salesforce's CEO is pissing on Microsoft in the press, Apple added Google's CEO to its board, Google and Yahoo both made ad deals with eBay, and Yahoo and Google will never get along. And everyone hates Microsoft.

Except Facebook, but we couldn't figure out what their logo is. (Is it the word Facebook? Is it the guy from the banner?) Also, note that the angry Google shopping cart represents fierceness.

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This map on Wayfaring.com proves it — dot-coms will make San Francisco the new capital of Silicon Valley. Until Google buys them all.

Web 2.0 Innovation Map
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Apparently, some Web 2.0 ideas were thought up outside the Valley. Bah, all lies.

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What do developers do when Yahoo buys their startup? They map their escape route.