Of course Bieber is talented himself. Infact I remember him (from featured videos on youtube,) before he signed with an external record company.
A lot of the comments were overwhelmely positive.
Suddenly he started making money, and even though he had the same level of talent he had before, because of him making money there just then happened to be more negative comments.
One of the comments was: "I used to like you before you were famous, but now I think your a fag!"
Which I think anyone would agree is an absolutely ridiculous comment! Its not even a criticism!
Some of his fans are obsessive as well.
From my point of view he is a talented singer, who has made money from his talent, and I have no problem with that. Some people do though. I haven't brought any of his music, or gone to a concert of his, but I have watched his videos on youtube and enjoyed them!