Playstation 2 - singstar pop Review

We own Playstation 2 Singstar Pop, Rocks, Amped, and 80's.  I think these are fun games; however, I feel that some of the songs and/or lyrics are not appropriate.  I feel that there are enough clean songs around that they did not have to choose some of the songs that they did.  Also, I'm not sure why some of the songs were chosen because it seems like there may be other, more popular songs, that they could have chosen.  I like how it gives a person feedback about their singing.