Ten most densely populated technology startup regions

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.

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.