Ummm...actually, TechCrunch may have started as Mike posting stories in his underwear years ago, but it's a thriving startup in its own right today, between TC, Crunchbase, TC50, Crunchgear, etc, etc. I bet the whole mess is worth $50 - 100m.
Btw, for comparison, HuffPo raised at a $75m pre-money valuation (announced Dec 1 but negotiated and finalized possibly before the economy went haywaire) and they have about 4x the traffic of TechCrunch.