Seven Startups You Probably Haven't Heard Of - But Should

Some startups burst onto the scene and become instantly famous. Think Mailbox, Yo, or Ello; they cause a firestorm and it seems like everyone is talking about them. Others work hard, develop a product, app, or service, and iterate over time - yet they stay at a lower level of buzz. More still are brand new, and are just waiting for the spark that will send them over the top. Some of these startups have the potential to disrupt huge markets or create whole new business categories where none exist...