Cuil was trying to solve a problem that was already solved, and they were so arrogant in their media briefs you could just tell that they were on another planet
Color, on the other hand, if they at least solve the problem of figuring out where somebody is I can see someone paying 200M+ for that (fb or google)
Is there a $40m+ market for a group photo album app? This app is free, so they'll need a great monetization model even if the market is there.