Read the following articles about the issues between social media and intellectual property use.
Social Media's New Intellectual Property Challenges (Webpage)
From LOL to Lawsuit: Implications of Using Memes Online and in Advertising (Webpage)
Bloggers Beware: Image Copyright Infringement is Costly (Webpage)
Branded Hashtags: The Next Big Thing? (PDF) (Starts on pg. 35)
Two Social Media Activities Guaranteed to Get You Sued. And One That Really Shouldn't (Webpage)