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

1. Reddit community covers the Colorado movie theater shooting  (Poynter)

2. Penguin buys self-publishing service Author Solutions for $116 million (PaidContent)

3. Library of Congress still plans to archive every tweet  (Nieman Lab)

4. Twitter continues legal fight on Occupy Wall Street protester trial  (AllThingsD)

5. How news pay walls are affecting writing (mUmBRELLA)