The best stories across the web on media and technology, curated by Lily Leung

1. Should Facebook open up to young kids? (Time)

2. Windows Phone Marketplace has surpassed 100,000 apps (The Next Web)

3. Atlantic Media’s digital-only pub has tablets in mind (Lean Back 2.0)

4. Twitter co-founder snags a book deal (Sacramento Bee)

5. Co-founder of GOOD magazine addresses layoffs (Poynter)

6. Three social-media profiles: Which one are you? (ReadWriteWeb)