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

1. Facebook stock falls back below $20 (Mashable)

2. George Zimmerman’s defense team seeks to subpoena Trayvon Martin’s tweets (AllTwitter)

3. When many papers are thinking web first, Orange County Register invests in print (Nieman Lab)

4. Quartz editor ‘confident in the ad-funded model’ (MediaWeek)

5. Twitter acquires video service (AllTwitter)