Step off a New York subway or drive a Los Angeles Freeway and it’s hard to miss billboards promoting YouTube’s biggest stars by the size of their fan bases.

WAM Score Wiki Activity Monitor (WAM) Score is an indicator of the strength and momentum of a FANDOM community. The WAM is calculated daily for the top 5,000 wiki sites and includes an overall rank, a vertical rank, and a score from 0 to 100.

Oct 24, 2009 · Rick Astley – Never Gonna Give You Up (Official Music Video) – Listen On Spotify: http://smarturl.it/AstleySpotify Download Rick’s Number 1 album “”50″” – ht

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Search or upload videos. Popular on YouTube: Music, Sports, Gaming, Movies, TV Shows, News, Spotlight. Browse Channels.

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Stars of the teen pop genre. Getty Images. Aaron Carter at the Elton John ‘Dream Ticket’ DVD launch party held at Caesar’s Palace in Las Vegas, Nevada on October 24, 2004

Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube.

Get the latest YouTube updates on the most trending videos from funny clips to movie and music downloads plus up-to-date news on the popular video-sharing website.

With everything from silly skits to makeup tips, YouTube stars appeal to s and teens with frank talk, off-the-wall scenarios, and even some deep thoughts. Advice from Common Sense Media editors.