Site seeks to spur political ad swaps

Voters in political ad-saturated swing states might want to avoid the P2P Politics Web site, which aims to let people swap campaign commercials via e-mail.

But for anyone who has missed the ads now barraging battleground states with all the relentlessness of a Florida hurricane, a trip to the new civic-minded site might be in order.

The new Web site is backed by Stanford professor Lawrence Lessig and his Creative Commons foundation, which promotes a version of copyright that facilitates widespread distribution and use of content.

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