Look at it through the hype-cycle: -Tech Trigger: PC's are common -Peak of Expectations: ~2000, max unsustainable web investment/activity. -Trough of Disillusionment: Bubble explodes, the web bleeds cash. -Slope of Enlightenment: Agile/Lean startups rise from the ashes. - Plateau of Productivity: Startup environment becomes normal and fundamentals increasing known.

Conclusion: There are plenty of bubble, but general web startups aren't one of them. Let's look at green tech's future as the next Bubble D'Jure.