With free online courses in Computer Science, Programming, Mathematics, General Science and Entrepreneurship, Udacity has over 700, 000 users and an innovative revenue model that includes both certification for completed courses as well as a job referral services.

FORBES: Udacity, Amara Partner To Provide Free College Courses In Almost Any Language

Unlike regular degree programs, which provide a macro education on a general topic (say, Computer Science), badges certify micro-based competency in a very specific skill (say, JavaScript).

FORBES: Why Get a Pricey Diploma When a Bleepin' Badge Will Do?