I launched OpenPhoto on Kickstarter as a project with full intentions on building a company around it (I left my job to pursue it).
It's an open source project so that helps in terms of getting accepted into Kickstarter. Their terms state that projects are basically fixed in term and scope.
What I promised on Kickstarter was a photo management/sharing platform that allows you to use your Dropbox or S3 accounts for storage. I'm nearly finished with that.
The next phase is to offer a hosted version of the software (a la Wordpress) via a for profit company. The source is and will always remain open.