My DD is 9 and is obsessed with babysitters club! which pleases me to no end! She talks about Claudia Kishi, learned how to talk pig latin, and takes the quizzes at the end of the books
She began reading the Little Sisters ones in the second grade and tore through them! Then I recommended the regular series and she began eating those up too!
There is talk of boys and dating, which doesn't bother me because it's pretty innocuous.
I have had to order through Ebay because they only have the graphics ones in print at B&N, etc. My DD doesn't like graphics book so we order them online and get big boxes of them at a time.