In a new article at BusinessWeek (apparently it was written in the future — it's dated seven days from now), they consider the question of whether we're in the midst of another tech bubble, headed for another crash.
The authors say probably not, and I agree with them. While it's true that many new companies are starting up with copycat ideas and little real value, the difference this time is that they are spending next to no money to get started. Innovation in business is just like innovation in nature: a thousand ideas must perish to find one that will propagate to future generations. In this era of cheap startups, there is very little harm in failure. This may prove to be an ideal environment for creating wealth in the Paul Graham sense of the word.