Date: 12/17/2012

Instagram this year taught a lot of companies an important lesson in public relations: If you're going to announce a major change to your terms of service agreement, make sure your language is crystal clear. Oh, and don't make it seem like you want to whore out your users. After posting its terms of service for 2013, a tidal wave of backlash crashed on co-founder Kevin Systrom's shore. The section in question death with Instagram using user images to make better ads and to better target those ads. Nothing too crazy.

Many chalked it up as a result of Instagram needing to turn a profit. However, many felt betrayed and threatened to quit the service. To tame the flames, System wrote a blog post explaining exactly what the new ToS meant and stressed that Instagram will not sell user photos. "To be clear: it is not our intention to sell your photos," wrote Systrom. "We are working on updated language in the terms to make sure this is clear."