This is an excellent thread, and I hope more people are aware of it. What Roseman said makes a lot of sense as far as whether or not to flush; the bad taste is in the leaves, not the flowers.
I also liked the 12 foot tall tree analogy, and here's something else to think about along those...
House Bill 2401 has been pre-filed in Washington State for the 2010 session to Legalize Marijuana :cool:
https://apps.leg.wa.gov/documents/billdocs/2009-10/Pdf/Bills/House%20Bills/2401.pdf