Favorite online games as a kid

I recently went on one of my favorite game sites as a kid, neopets.  I used to spend hours playing games and buying books and food for my pets.  Going on neopets recently gave me the idea to list some of my favorite game sites from when I was younger:
1. Neopets
2. Disney Channel website
3. Girlsense
4. Postopia (which no longer exists)
5. Millsberry?
6. Club Penguin

And as far as CD games for the computer, I really enjoyed Emergency Vet games, Oregon Trail, and Zombinis.