I fear that the number of speculative aquisitions of 'blook' domain names will stiffle the scene before it even starts. IMO, blook domains are highly speculative and the value to end users unproven at present. As domainers are hording the decent names, how can the blook scene flourish and give your domains the value you're hoping for?
As the scene is so new, I'd value the majority of blook domains at reg value. However, if you proactivly develop your site and in turn help the blook scene develop, it could just be worth something in the long-run.