text: In 2015, Twitter began to roll out the ability to attach poll questions to tweets. Polls are open for up to 7 days, and voters are not personally identified. In Twitter's early years, users could communicate with Twitter using SMS. Twitter discontinued this feature in most countries in April 2023, after hackers had exposed vulnerabilities in the feature.
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  In 2016, Twitter began to place a larger focus on live streaming video programming, hosting various events including streams of the Republican and Democratic conventions during the U.S. presidential campaign, and winning a bid for non-exclusive streaming rights to ten NFL games in 2016. During an event in New York in May 2017, Twitter announced that it planned to construct a 24-hour streaming video channel hosted within the service, featuring content from various partners. Twitter announced a number of new and expanded partnerships for its streaming video services at the event, including Bloomberg, BuzzFeed, Cheddar, IMG Fashion, Live Nation Entertainment, Major League Baseball, MTV and BET, NFL Network, the PGA Tour, The Players' Tribune, Ben Silverman and Howard T. Owens' Propagate, The Verge, Stadium and the WNBA. , Twitter had over 200 content partners, who streamed over 800 hours of video over 450 events.