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The Web 2.0 startups featured at TechCrunch40 are adorable, really. But they can't compete with the draw of a real business with real, paying customers, Six Apart executive Michael Sippey points out: "Around the corner from tc40 there are 7000 people at salesforce.com's conference." Salesforce.com, unlike most of the startups on display at TechCrunch40, dares to charge for its Web-based software — a recipe for disaster, according to TechCrunch40 organizer Michael Arrington. Right. If you consider half a billion dollars in annual revenues to be a disaster, that is.