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POPULAR TOPICS BY THE MINUTE, DAY, AND WEEK 
- #rihannasforehead
- #buticouldnt
- Nick
- Justin BieberLots of girls are tweeting about their biggest crush. The popular Canadian singer is just 15 years old. His album is out Nov. 17.
- #hcr
- Fort HoodGunmen opened fire inside Fort Hood in Texas Nov. 5, killing as many as 13 and wounding numerous others.
- New MoonNew Moon, the next Twilight movie, will be out in theaters Nov. 20. Fans can't wait.
- C-Span
- RihannaA preview of Rihanna's interview with Diane Sawyer aired on Good Morning America this morning (Nov. 5). The full interview will run on tomorrow's episode of 20/20.
- #openwebawards@mashable's 3rd Annual Open Web Awards, Social Media Edition. Anyone can nominate via Twitter or Facebook through Nov. 15, 2009. Voting on the 5 top in each category takes place Nov. 18 - Dec. 13. Winners to be announced Dec. 15.
- Fort HoodGunmen opened fire inside Fort Hood in Texas Nov. 5, killing as many as 13 and wounding numerous others.
- Google WaveEvery one still wants invites to the beta for Google's new communication/collaboration tool.
- follow friday
- TGIFThank God It's Friday. People are tweeting how happy their are it's the weekend.
- #beforeiselfdestructThe title of 50 Cent's fourth studio album, out Nov. 16. People who don't know this are tweeting things they will do before self-destructing...
- #fatgirlremix
- #myheritage
- New MoonNew Moon, the next Twilight movie, will be out in theaters Nov. 20. Fans can't wait.
- YankeesThe New York Yankees won the World Series against the Philadelphia Phillies, 4 games to 2.
- Facebook 33
- #FortHoodGunmen opened fire inside Fort Hood in Texas killing as many as 11 and wounding numerous others.
- OrlandoA shooting at a hi-rise in Orlando, Florida has resulted in 2 deaths and six injuries (Nov. 6, 2009).
- Happy HalloweenOct. 31 is celebrated as Hallowe'en (All Hallows' Eve) in many countries. People are wishing each other a joyful festival night.
- HalloweenOct. 31 was Halloween. People are tweeting about the festivities they attended and the sweets they ate (or gave out).
- #unseenprequelsPeople are tweeting made-up titles for nonexistent prequels to different movies.
- This Is ItMichael Jackson's new movie, which came out Oct. 28, 2009. The documentary is a behind-the-scenes look at the tour he was preparing.
- Google WaveEvery one still wants invites to the beta for Google's new communication/collaboration tool.
- #theworstPeople are tweeting things they consider to be "the worst."
- #musicmondayA meme for tweeting what you're listening to each Monday.
- #blamediddy
- YankeesThe New York Yankees won the World Series against the Philadelphia Phillies, 4 games to 2.
- Paranormal ActivityAn ultra low-budget horror film about a couple experiencing demonic forces at night. The film opened US-wide (after a limited release on Sept. 29, 2009) on Oct. 16, 2009.
- Fort HoodGunmen opened fire inside Fort Hood in Texas Nov. 5, killing as many as 13 and wounding numerous others.
- #losemynumberPeople are tweeting reasons they would like other people to refrain from calling them.