I think that Pippi Longstocking is a brilliant character, and I don't find her behavior to be an issue. Pippi reserves her worst behavior for adults who treat children in a condesending way. I actually find that Pippi can teach a positive message: just because someone is bigger than you, doesn't mean they have the right to treat you any way they please. Sometimes children need to hear stories where everyone isn't too perfect. After all, we all have our flaws. Pippi might be unconventional, but she isn't mean.