Seaweed Antibiotics?

Dan Gaffney writes "A new treatment for cholera and perhaps a new type of antibiotic medicine may emerge from compounds discovered in an Australian seaweed. University of New South Wales researchers have found that furanones - isolated from the seaweed Delisea pulchra - can prevent the bacteria that cause cholera from switching on their disease-causing mechanisms. Furanones don't kill such microbes but simply "jam" their ability to signal each other, meaning their use less likely to create the drug-resistance problems."