Ideas like this always reminds me of the old lady who swallowed a fly, which is such a powerful metaphor for almost any time we try to control invasive species.<p>Creating a demand for a product is a powerful force, but it sure is hard to control once it has been established.<p>P.S. Here's the link to the cobra effect article from yesterday: <a href="https://secure.wikimedia.org/wikipedia/en/wiki/Cobra_effect" rel="nofollow">https://secure.wikimedia.org/wikipedia/en/wiki/Cobra_effect</a>