Have a smart ad for a product that you think has hit the super bowl sweet spot for advertising: popular ad, leading to buzz about your product? Under a new advertising regime, instead of paying billions for a spot on the Super Bowl, you could pay less to have it display on the web, if your ad becomes popular and users vote for it. Harbinger of a new way of charging for ad space on the internet? Certainly all kinds of content providers are hoping for some revolutionary thought. Too soon to tell if this will pan out, and it's only being tested on Digg.com. But if successful, it may become a standard. Good to check it out.