A new report from the American Press Institute offers nine recommendations for news publishers seeking to grow mobile revenue. One of these tackles a thorny question: What does it really mean to "engage" a mobile user?

Summarizing the consensus from an earlier API Thought Leader Summit on mobile news, "mobile engagement" can refer to any of these phenomena:

• Contributing content from a mobile device.
• Amplifying content.
• Session-depth metrics.
• Long-term loyalty.
• Cross-platform interaction.
• Financial contributions.

Tips for generating mobile engagement:

• Think about the first-time user welcome.
• Always offer a next story.
• Create mobile-first (or mobile-equal) content.
• Personalization of content.
• Use push notifications in mobile apps.
• Offer service-oriented tools.
• Use technology features (such as GPS) built into the phone.