Presleigh is part of a booming phenomenon, the growth of a new wave of interactive play sites for a young generation of Internet users, in particular girls.

Millions of children and adolescents are spending hours on these sites, which offer virtual versions of traditional play activities and cute animated worlds that encourage self-expression and safe communication. They are, in effect, like Facebook or MySpace with training wheels, aimed at an audience that may be getting its first exposure to the Web.