But Box.net is a child of the Web and the Facebook era, rather than an earlier age of desktop and server-based enterprise applications built to work only inside corporate networks. That means it’s less intimidating to use—and it also means word about the service spreads more virally. “You don’t get to the 5 million users they have today and the 60,000 businesses without users actively introducing it to others in their workflow, and that is a fundamentally different model from SharePoint,” says Holleran. “Box.net has the opportunity to grow that market substantially and become the leader.”
I'd like to see their actual customer numbers. I don't know a single individual who uses Box.Net (most people I know use dropbox). But I know several companies (my own included) that have been implementing Box because Sharepoint has become such an over complicated failure.
But I didn't find Box "virally". I simply realized Sharepoint wasn't delivering what it promised and went searching for other solutions.