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"A wave of nostalgia served as an escape from summer heat and tragedy last week on Twitter, as a Nickelodeon '90s retrospective took the top honors in our weekly survey. \nMeanwhile, the real world gripped Twitter users, with the Norway explosion/shootings and Amy Winehouse's death spurring users to not only tweet, but spread the word of a moment of silence for Norwegian victims.\nAnd then there was football, both American (as in NFL) and international (as in futbol), keeping the Twitter fires burning all week, even during their off-seasons. \nYou can check Twitter trends from the past in our Top Twitter Topics section.\nTop Twitter Trends This Week:\n\n\n    \nRank\nTopic\nIntensity\nDescription\n\n\n    \n#1\nNickelodeon\n2\nThe TV channel TeenNick aired a block of programming called \"The '90s Are All That\" containing Nickelodeon shows from the '90s. Some of the trends that came from viewers reminiscing were Kenan &amp; Kel, Drake &amp; Josh, Doug, Clarissa Explains, Ren &amp; Stimpy, Rugrats and Catdog.\n\n\n    \n#2\nNorway Explosion/Shootings\n2\nThere was an explosion in Oslo and a mass shooting at Norwegian Labour Party's youth camp on island Utoya, Buskerud, Norway. People all over the world showed support for the victims with a moment of silence.\n\n\n    \n#3\nTwitter\n2\nUsers discussed problems they were having with Twitter, along with things they've learned by participating on the social network.\n\n\n    \n#4\nSoccer/Football\n2\nFans continue to watch football in the off-season and the largest football-related trend this week was \"Support Timnas Indonesia\" referring to the Indonesian National Football Team beating Turkmenistan 4-3 in the Pre Qualification World Cup 2014.\n\n\n    \n#5\nAmy Winehouse\n2\nAmy Winehouse was found dead. She was 27 and users noted that this is the same age as Janis Joplin, Kurt Cobain, Jimi Hendrix, Jim Morrison, Brian Jones, and other members of the \"27 Club.\"\n\n\n    \n#6\nPhineas &amp; Ferb\n1\nInexplicably, this old TV series continues to trend, week after week. Disney's Phineas and Ferb: Across the Second Dimension movie is released on August 5th.\n\n\n    \n#7\nNational Football League\n1\nNow that the U.S. football lockout was resolved, players are getting traded, re-signed or released as teams prepare for the next season.\n\n\n    \n#8\nHarry Potter &amp; the Deathly Hallows, Pt. 2\n1\nHarry Potter fans continued to discuss the latest film along with other movies in the series. One of the most popular trends was \"Greatest Harry Potter Moments\".\n\n\n    \n#9\nJustin Bieber\n1\nBieber fans in Mexico, Colombia and other South American countries started trends to petition the singer to tour in their countries.\n\n\n    \n#10\nOne Direction\n1\nThis week saw the first anniversary of the creation of One Direction, a UK pop group brought together on the singing talent UK TV show X Factor..\n\n\n\n\n\u00A0\nData aggregate courtesy of What the Trend.\nImage courtesy of iStockphoto, 123render"^^<http://www.w3.org/2001/XMLSchema#string>
<http://mashable.com/2011/07/31/top-10-twitter-trends-11/>