As great as free server space is for us regular folk, businesses use cloud storage too (and they actually pay for it). In an effort to attract the attention of mobile app developers, and ultimately keep enterprise clients happy, Box has launched a revenue-sharing program called $rev for those who create business-focused software integrated with its cloud storage platform. It's pretty simple, really. Step one: get your app to play nice with Box; step two: people use the app; step three: make it rain. By getting an app into Box's OneCloud club and enrolling in the $rev program, devs can net up to 15 percent of the "per seat price" in rewards. Although its API is already available, Box has launched iOS and Android SDKs in tandem with $rev to make the integration step a bit easier; more SDKs are expected in the "coming weeks." The $rev scheme is currently in a closed beta phase, but it'll open up in the near future. Interested app crafters can learn more about getting paid by Box, download the SDKs and sign up to $rev at the source links below.