To promote the album, Bieber appeared on several live programs including The View, the 2010 Kids' Choice Awards, Nightline, Late Show with David Letterman, The Dome and 106 & Park. Sean Kingston appeared on the album's next single, "Eenie Meenie". The song reached the top ten in the United Kingdom and Australia, and the top-twenty of most other markets. On April 10, 2010, Bieber was the musical guest on Saturday Night Live. On July 4, 2010, Bieber performed at the Macy's Fourth of July Fireworks Spectacular in New York City. The following single from My World 2. 0, "Somebody to Love", was released in April 2010, and a remix was released featuring Bieber's mentor Usher. On June 23, 2010, Bieber went on his first official headlining tour, the My World Tour, starting in Hartford, Connecticut, to promote My World and My World 2. 0. Bieber featured in Soulja Boy's single in May 2010, titled "Rich Girl". In July 2010, it was reported that Bieber was the most searched for celebrity on the Internet. That same month his music video for "Baby", surpassed Lady Gaga's "Bad Romance" to become the most viewed, and also the most disliked YouTube video ever. However, Taylor Swift's Blank Space surpassed its number of views in 2015. In September 2010, it was reported that Bieber accounted for three per cent of all traffic on Twitter, according to an employee of the social-networking site.
Gomez’s Instagram was back online minutes after it was taken down, with the nude photos deleted. The singer is the most-followed person on the social media platform, with 125 million followers.