Allie Finkle's Rules for Girls (http://alliefinkle.scholastic.com/)

The site isn't full of activities -- it clearly exists primarily as a promotional tool for the books -- but its games should entertain kids for at least a half-hour or so. The real selling point is the site's super-safe interactivity options, which let girls vote on random topics or post comments on a monitored message board. The boards even screen for bad language, e-mail addresses, attached photos, and aggressive or mean messages. Finding a secure way for tween girls to express themselves online can be tricky; the Allie Finkle's Rules for Girls site gives them the chance to post and respond without risk. That alone makes the site worth visiting.