Skype looks like Silicon Valley's best hope for a blockbuster initial stock offering in 2010. With Facebook determined to stay private until next year, the former eBay orphan could steal the scene with a quick flip. Moreover, as a result of clarifying copyright issues and rewriting its code to attack the business market, the company may be worth twice its $2.75 billion price tag when eBay sold all but 30 percent of its stake last year.