Instagram is a photo sharing app that launched in October 2010 and has grown to over 13 million users. It allows users to take photos, apply filters to the photos, and share them. The app has raised $7 million in its first round of funding and is valued at around $20 million. The CEO believes the best products start as features within other apps and Instagram began as a feature within another app. Moving forward, the company aims to develop a profitable business model while retaining its large user base.