Well the font is one of those things I don't like at all here.
So here is a way how you can change it (and I how I did):
I am using Stylus addon, available at least for Firefox and Chrome.
Then I made a new style for freegamedev.net with contents:
p, div, span, h1,h2,h3,h4,h5,h6
font-family: DejaVu Sans !important;
And that's it, now it shows normal font everywhere, same like most other websites.
You can OFC put any font name there.
BTW. I've put tab or spaces inside above
code block and it just removed it before
Offtopic, more of my favourite (FireFox) extensions listed on my website.