Around the Web 3.9.09: Woz debuts with a cha-cha, Zuckerberg appears on Twitter, Wolfram Alpha challenges Google

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Apple founder Steve Wozniak and Karina Smirnoff rehearse for ‘Dancing with the Stars.’ Credit: ABC.

-- High school students go online to rate each others’ chances to get into colleges. LAT

-- Facebook CEO Mark Zuckerberg outs himself as ‘finkd’ on Twitter. VentureBeat

-- ‘Dancing with the Stars’ contestant Steve Wozniak, who will do the cha-cha tonight, is hoping for geek support to get him through the first round. Wired

-- The ‘Watchmen’ opening credits go online, stay online. Silicon Alley Insider

-- A new Japanese device lets you control gadgets with your face. PhysOrg via Digg

-- Wolfram Alpha, a ‘computational knowledge engine,’ tries to deliver facts better than Google can. TechCrunch

-- Good luck signing up for Facebook if your last name is Super, Pancake, Batman or Kisser. Wash Post

-- Jetpacks make a comeback. Crashes are inevitable. WSJ

-- Crimedex: social networking for law enforcement. NYT

Corrected: An earlier version of this post said Zuckerberg was now using Flickr under the name ‘finkd.’ In fact, he’s now using Twitter.

-- Chris Gaither