[d1str0]

Why do people use styles like these that push all the content uncomfortably to the sides? 40% of the screen is dedicated to what? The blog title and a link home.

Edit: http://i.imgur.com/62l4zCG.png 500% better

[rmrfrmrf]

The line length in your edit is WAY too long.

[drdaeman]

That depends on its physical size (and viewing distance). Pixels don't really mean anything.

[tptacek]

Because there is an optimum range of characters per line for readability.