A couple of links relating to ethical considerations of emerging technologies.
No sex please, robot, just clean the floor – Sunday Times – Times Online notes the call by some for ethical guidelines to be developed with respect to robot/AI research. Ethical guidelines for both developers and users.
BetterHumans.com : An uplifting evening with James Hughes. Simon Smith ponders whether you should make your pet (or other animals) more intelligent if you had the power to do so. Again some interesting reflections here (though Deep Blue Sea did come to mind seeing as dogs and cats are carnivores).