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 on December 30, 2008, that Israel would be the first government to hold a worldwide press conference via Twitter to take questions from the public about the war against Hamas in Gaza. Dr. Chao Guo and Dr. Gregory D. Saxton have conducted a study of how nonprofit organizations use Twitter in their public relations campaigns. “Tweeting Social Change: How Social Media Are Changing Nonprofit Advocacy (2014)” has supported earlier studies that tweets sent out by nonprofit organizations fall into three categories of information, community, and action. Their sample included 188 “Civil Rights and Advocacy” organizations, and they used both quantitative