&gt; The challenge is liquidity, ie how do you seed the network and content but if you can solve that you can operate a review service for a fraction of the resources currently being wasted on these red queen races.<p>I&#x27;ve been thinking about this problem a lot too. There&#x27;s actually many services that have come and gone in the review space. The solution I&#x27;ve come to is that any review service needs to be more than just reviews. It really needs to be more of a community.