Twitter recently announced a deal with the analytics firm Datasift that authorizes Datasift to sell the content of public tweets posted over the last two years. Companies who buy the data from Datasift will be able to market to users based on the topic or location of the tweets. DataSift will be required to regularly remove tweets that users delete. Previously, Twitter gave the Library of Congress access to every public tweet since the company’s inception in 2006. In 2011, the Federal Trade Commission reached a settlement with Twitter over charges that inadequate security measures allowed computer criminals to gain administrative access to the company. For more information, see EPIC: Federal Trade Commission.