Lots of info items with the p-word (platform) this morning; from the second page of the Technology Review article:
Levie's latest offering is the Box Platform, which enables software developers to build Box.net into other software. As with Dropbox, the goal is to create a common cloud data store that many programs can access. Both Google Docs and Salesforce.com can already work with the Box.net platform. "Being a platform is the killer app, because we can become the operating system for every business," says Levie.