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Google maps mashup site Startup Warrior bills itself as a tool entreprenuers can use to "find a startup job, explore your neighborhood, or decide where you should start your own company." But we feel the site is best used by wary VCs, hassled journos and cynical M&A types looking for regions to avoid. Be warned: Enter into any of the ten regions mapped below and suffer elevator pitches, pleading looks and limp handshakes at your own risk. Update: Apparently Startup Warrior didn't do much in the way of researching the actual addresses of these startups — many are listed by only by city and state, leading to clumps in central neighborhoods.

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

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

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

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

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

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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.

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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.

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

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

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