I’ve just stumbled on Better Posters — a blog on scientific poster design from Zen Faulkes (aka DoctorZen),
a neuroscientist at the University of Texas Pan-American. All the
advice is top-notch, and he critiques real posters from real
conferences — and in some cases actually revises them.
general advice on oral presentations is common (if not always sound),
specific information on how to make a good poster is rare.
DoctorZen also runs the blog NeuroDojo, which also sometimes includes scientific career advice.
(Please follow me on Twitter: @SciCareerEditor )