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Now Playing: 03-20-12 Marketplace Tech Report

YouTube is proving to be increasingly influential in this year's presidential campaigns. YouTube videos differ from political ads in a couple of crucial ways -- make a spot on YouTube and it can be up and running within minutes and pretty much for free; plus, videos you see on a computer screen are likely to be more positive and friendly than the attack ads you’d see on television. Also, a better system for online security, and the return of NetZero.