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

1. Facebook stock slides below $20 (CNNMoney)

2. Study: Most-watched news videos on YouTube depict natural disasters or political upheaval (Pew)

3. How social media may have affected an important MLB trade (Poynter)

4. Is pay TV really shrinking? (AllThingsD)

5. Huffington Post’s tablet mag. once $19.99 a year, is now free (Capital New York)

6. Student journalist ejected from open NAHJ board meeting for tweeting (Unity News)

7. Hollywood execs developing social campaigns for movies early on (WSJ)