<div id="subtitle">'N Sync had decade's most popular album, Mariah Carey sang its most popular single</div><div><p>The top album of the decade came from an act that's not even around anymore — 'N Sync.</p><p>Billboard magazine says the boy band led by Justin Timberlake had the decade's best-selling album with "No Strings Attached," which sold more than 10 million copies.</p><p>The most popular song of the decade was Mariah Carey's ballad "We Belong Together."</p><p>Eminem was named the top artist of the decade, while Nickelback was named top group.</p><p>For 2009, Taylor Swift had the best-selling album with "Fearless," while the Black Eyed Peas' "Boom Boom Pow" was top song.</p><p>Billboard released those chart-toppers plus others for the decade and 2009 on its Web site on Friday.</p><img src="http://admatch-syndication.mochila.com/images/ad.gif?aid=65233921&bid=informcom" /></div><div id="copyright"><div>

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