Today the joke-explainer duty falls upon me:

http://en.wikipedia.org/wiki/Tulip_mania

Even if you are familiar with the expression, the full article is well worth reading.

Indeed, those who deal with web 2.0 startups would be well advised to read that article.

These who advise to read this article better read it in full themselves. Especially part where it is explaining jumps from futures contract to options and back. And how this affect price.

Well, tulips.com will sell you 300 tulips for $347, though I'm sure you could get them a lot cheaper if you pick 'em up from the farm yourself. Roughly three to one, though, would appear to be the going rate.