Where 7 Hot Web Start-ups Were Born

catchesthelight/Flickr
4 of 8

Dropbox

Where it started: A bus

You know that awful, gut-wrenching feeling you get when you’ve left something crucial behind? Dropbox founder Drew Houston is well acquainted with that feeling--it’s exactly how he felt when he boarded a bus from Boston to New York, intending to work on a specific project, and discovered that he had left a thumb drive containing all of his previous work at home.

Houston was so frustrated by the experience that he spent the rest of his bus journey writing code for a file-sharing program that would allow people to share and access files from any location.