Neat (new?) iTunes Feature

[BarTopDancer]

I was poking around iTunes and noticed they have a new (to me at least) feature called "complete my album". When you click on the link it takes you to the albums of the music you already purchased and tells you how much it would be to finish downloading the album sans the song(s) you already purchased.

I was just thinking that it would be nice to be able to buy the album without buying the song a second time.

Neat!