Twitter #Thatsafrican and #thingsdarkiessay hashtags after users complained that they found the hashtags offensive. There are allegations that Twitter removed #NaMOinHyd from the trending list and added an Indian National Congress-sponsored hashtag. There are numerous tools for adding content, monitoring content and conversations including Twitter's own TweetDeck, Salesforce.com, HootSuite, and Twitterfeed.com. , fewer than half of tweets posted were posted using the web user interface with most users using third-party applications (based on an analysis of 500 million tweets by Sysomos). In June 2009, after being criticized by Kanye West and sued by Tony La Russa over unauthorized accounts run by
Twitter usage stolen pets, people, and items. The site also allows police or other organisations to register and broadcast appeals for information to these social networks. The first criminal prosecution arising from Twitter posts was started in April 2009. FBI agents arrested Daniel Knight Hayden, who was accused of sending threatening tweets in connection with his plan to attend a Tea Party protest in Oklahoma City, Oklahoma. In July 2009, Horizon Realty Group, a Chicago real estate management company, sued a former tenant, Amanda Bonnen, for libel based on a Twitter message she sent to friends. Horizon contended that Bonnen defamed Horizon