It does get talked about, but mostly in the depths of 3D printing forums, rather than on blogs. ABS fumes seem to affect different people differently. Some people are rather unaffected, and others get slight headaches. PLA fumes smell more pleasant (some say like popcorn) by comparison, but that doesn't mean it's good for you.

http://forums.reprap.org/read.php?1,40296,40355,quote=1

On the forums, there are links to toxicology datasheets if you like to look into it.

I always print in a well-ventilated space. Do you think it'd help if I added a section on this?