Slate (my favorite mainstream internet site) posted an article on how bubbles (internet, housing, gum) are in total good for the economy. I recommend you check it out but don’t be stupid enough to invest in a bubble even if it benefits America as a whole:
But this is only half the story! After all, the process of growth and innovation doesn’t end when a bubble bursts. The Internet wasn’t unplugged and shut down in 2002. In fact, once you gain a little historical distance from bubbles, it is clear that some bubbles—some, not all—leave behind something that is a little bit boring but extremely useful: infrastructure. The bubbles that have left behind commercial infrastructure have been incredibly important contributors to America’s remarkable long-term economic performance.