(3)because of their smiles

(2)because of his/her entertainment

http://www.youtube.com/watch?v=7PP3fCRWtbk&playnext=1&list=PL1CD9FAA01BB1E9CF&feature=results_main
http://www.youtube.com/watch?v=NgrKMB1Qhlc
http://www.youtube.com/watch?v=4cJwcAQP81Q
http://www.youtube.com/watch?v=c8HILqDwRao
http://www.youtube.com/watch?v=OcH4BblGot4

(1)because of beautiful body features.