Ok, I'm just going to be bluntly honest here: My daughter used to love this site. Addison's nine, and she joined Dizzywood about a year ago. It seems to be a pretty positive site, true, but it doesn't have a chat filter. A lot of... Inappropriate behavior is demonstrated on this site, and now they've got all this Silver and Gold membership junk. Addy and I remember Dizzywood before this, and we loved it, but now that they've got restrictions on what you can and cannot do without a membership, it's just plain irritating. Overall, it's ok, but with it comes a price. Literally.
However, the games are a lot of fun (not very educational, but fun) and there are a lot of interactive quests and such. Addison absolutely loves these, but she wishes there were more actual competitions and stuff like that. (She's rather competitive; She especially wishes they had writing competitions.) Dressing up and personalizing the online avatar is fun, too, and I think this may be her favorite part of the site.
Overall, it's a cute site but it's not my favorite.