As someone with vision impairment, this is what your site looks like to me: (level of detail is approximate)

http://i.imgur.com/w2iNd.png

But when I try to enlarge the fonts, it doesn't look any better.

http://i.imgur.com/WQYPB.png

Can we, as a community, please stop using px units in our CSS? I can't help but chuckle when opening a site in elinks in a terminal makes it look far better than it does in my browser.