Anand Iyer, the Chief Product Officer of Threadflip, just wrote a thoughtful blog post on how to build liquidity in modern marketplaces.

In short:

• Create a managed environment
• Have an actionable rating systems
• Carefully curate content
• Have a human touch, but keep learning
• Focus on supply
• Invest in your interface, especially focusing on mobile and frictionless payment
• Provide social proof

Read the full article at: http://firstround.com/article/How-Modern-Marketplaces-Like-Uber-Airbnb-Build-Trust-to-Hit-Liquidity