It’s not clear that everyone interacting with it knows that these are fictional characters… On the other hand it sounds like it’s been a successful promotional gimmick. Corsetto wrote:
Hazel and Jamie’s MySpace page has received massive attention! They had more “friends” in two days than I’d gotten in a few weeks! They already have their own personal “creepy stalker,” they’ve been granted “friendship vibrators” (thank you, Sam!), and Jamie’s been tickled pink over all the compliments she and her *ahem* melons have received.