Filefront has a good article on Hello Kitty Online entitled: Tired of WoW? Try Hello Kitty Online.

I am amazed at how there are so often comparisons made between these two games who could not be at more polar opposite spectrums.

But if you read some of the commentary, it would really seem that the two have a lot of comments, as one of the comments puts its:

Obviously WoW and Hello Kitty Online have very different target markets. This is why i’m saying that what WoW did for (or to) boys, Hello Kitty Online will do for (again, or to) girls.