Not bothered, its up to them really. However I do find it ridiculous when some people will kick off about others repeating songs that say the word. I can't remember what song it was, but back when I used to work as a karaoke presenter some guy had asked for some rap song and this black guy started going absolutely mental when the singer said the lyric. Like proper screaming across the bar..and when the song finished he kept on going, but his mates joined in too calling the guy who was singing a 'racist twat' and such
Edit. ahhh, just seen my reply is extremely similar to Rileys. Guess this is not that rare a thing then, for people to kick off about others singing rap lyrics :S