SJ's Love Monkey
Ambrose-ia
Its all down to very good marketing, he isn't a bad looking bloke, he hasn't got a great voice but it certainly isn't the worst about and he also uses the hottest producers in r&b to work on his albums ie Pharrel Williams and Timbaland. As i say he has a core market and his PR people go for the jugular. I also wouldn't mind being a fiver behind him that's for sure.