Learney - Knowledge aggregator for developers

Project Fixup - Meet people, not profiles

Multiplication Kingdom - Learn the times tables by playing and having fun in the Multiplication Kingdom (for kids and adults!)

TEEM — Meet offline - People & Activities Nearby

Khan Academy - Khan Academy offers online tools to help students learn about a variety of important school subjects. Tools include videos, practice exercises, and materials for instructors. Read more about Khan Academy.

Babylist.com - Put anything onto your baby registry from any store.