Swagbucks, a site where users earn rewards for performing tasks like watching videos and taking surveys, is expanding with the launch of a new shopping page. Co-founder and Chief Operating Officer Scott Dudelson tells me that there's clearly money to be made in affiliate shopping programs, but Swagbucks has held off, and instead built "a large reputable loyalty brand around other Internet activities." It has also built a profitable, bootstrapped business, with $23 million in revenue last year (not including the shopping launch, he says the company is on-track for $30 million in 2012) and more than 5 million registered users.

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