Well according to the makers of 'Kidz Bop', apparently children "LOVE" to hear other kids "sing". Combine that factor with all of today's most popular song titles, neutered for content, so you KNOW it's safe for l'il Johnny Fucktard and you've brewed a success!
Seriously, when I was a boy, I felt embarassed for other kids who had to sing...not to mention that children singing in unison reminded me of nothing more than "Another Brick in the Wall"... Hah...I'd like to see a Kidz Bop version of "The Wall"...I'd L0LZ0RZ.