I agree with that premise. Quora will be lucky to bail out with a $425 million exit on the downside of this expansion. They're a decade old, the VCs are going to want their money soon and the clock is ticking on this long up-cycle (as the desperate IPO rush blatantly indicates). Who is paying $1+ billion for Quora? There are no overpaying buyers for that type of entity - Yahoo is dead, AOL is dead, and InteractiveCorp is far too shrewd to pay that extreme valuation. Quora is worth $100-$200m tops right now.

Genius is in the same boat. A decade old, failed premise (turns out people don't actually want to annotate everything), failed expansion plans (so... back to lyrics then), no business model. At the mercy of the VCs, they'll eventually be passed around for $10m or $20m like MySpace or Tumblr.

These companies are this start-up generation's About.com (or the latest eHow).

Simple rule for anyone doing a knowledge service: if you put the profit motive over the knowledge motive (which is the only choice if you take a lot of VC), your service will end up in the dustbin of history, no exceptions.