Not content with voting Rick Astley the Best Act Ever at the MTV Europe Music Awards, web users across the globe are attempting to Rickroll Christmas and send the 1980s Master of Cheese to the top of the charts for Christmas 2008.

Rickrolling is a slightly annoying web prank that saw hundreds of supposedly genuine web links re-directing users to the music video for Astley's 1987 hit 'Never Gonna Give You Up'. Since Rickrolling began, it's estimated that Astely's video has been watched on YouTube more than 20 million times.

More than 57,000 social networkers on Facebook have joined a group called The Ultimate Rickroll, which aims to "Stop X-Factor being number one again". The group urges members to "purchase 'Never Gonna Give You Up' from iTunes/7Digital between December 15 and 20".

And if that's not enough, the Facebook member behind the group has even created a website dedicated to the project, just in case there's anybody left on the web who's not a member of Facebook.

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But 57,000 social networkers may not be enough to keep X-Factor off the top spot once again. It was revealed yesterday that this year's X-Factor winner Alexandra Burke had smashed the 2006 fast-selling download ever record set by Leona Lewis.

Lewis, winner of the 2006 series of X-Factor, sold 82,000 downloads of her single A Moment Like This during its first day of release. However, Burke's cover of Leonard Cohen's Hallelujah sold 105,000 downloads on Sunday, its first day of release.

Take That and Girls Aloud have both recently topped the charts, but their first-day download figures were just 9,488 and 7,600 respectively, which proves just how popular the X-factor singles are. Sadly, its unlikely that the Ultimate Rickroll can prevent an X-Factor Christmas number one for the fourth year in a row.

See also: Thanksgiving Day gets rick-rolled