Ethics for Machines - J. Storrs Hall offers some thoughts on how to design friendly AIs. - http://www.kurzweilai.net/articles/art0218.html
The Hedonistic Imperative - Outlines how nanotechnology and genetic engineering will eradicate aversive experience in all sentient life - and why this is both instrumentally rational and ethically mandatory. - http://www.hedweb.com/
The Ethics of the Cyborg - Argues that the physical integration of humans and electronic technology should have ethical limits. - http://www.limmat.ch/koni/texte/cyborg-ethics.html
Embracing Change with All Four Arms - This paper sets out to defend human genetic engineering with a new bioethical approach, post-humanism. - http://www.changesurfer.com/Hlth/Genetech.html
Ethics for Transhumans - Peter Voss's reply to J. Storrs Hall's "Ethics for Machines". - http://www.optimal.org/peter/ethics_for_transhumans.htm