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 alerts and updates regarding the February 2009 bushfires. The then Prime Minister of Australia Kevin Rudd used his Twitter account to send out information on the fires, how to donate money and blood, and where to seek emergency help. In April 2009, public health departments used Twitter to provide updates on H1N1 cases. Twitter was also massively used in 2014 Balkan floods. Its efficiency and speed was considered to be "very useful" in exchanging information about flood victims and missing persons. During the CBC News television coverage of the Canadian federal election on October 14, 2008, the CBC cited tweets