It’s nice to have a change from the regular listing of albums and singles Billboard is normally known for.  USA Today reports that the company has actually been tabulating downloads, using Nielsen SoundScan, since 2003.  Now that they’ve ironed out all the kinks and feel more comfortable they’ve begun publishing the lists.  They are only tracking songs that have been legally purchased though, for obvious reasons.  For top song swaps, you might want to check out BigChampagne.

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