NEW YORK Sunday's Super Bowl might be nearly forgotten, but advertisers are still mulling the effectiveness of their pricey investments. YouTube has weighed in by crowning Doritos the big winner with the video site's millions of visitors. The Pepsi snack brand had two spots crack the top-five tally in YouTube's Ad Blitz, a special section it created to showcase Super Bowl commercials. The "Free Doritos" commercial took top honors with voters. (YouTube declined to say how many votes it received.) It was also named a favorite 4,700 times by viewers, garnered over 800,000 total site views and drew more than 1,200 comments.