1. Has putting up a paywall at the Guardian become moral imperitive rather than a choice? (Mathew Ingram / paidContent)
2. How Spotify engineered the new music economy (Max Blau / Mashable)
3. What mugshots mean for public data (Hilary Mason)
4. New BBC Store lets you pay to download, keep shows (Paul Sawers / The Next Web)
5. Ezra Klein’s Wonkblog launches viral site Know More (Laura Hazard Owen / GigaOm)
