I think fluid text works well for phones and stuff where if you rotate the screen it flows nicely. The problem is huge displays-- I'm at like 2560x width.
Edit: A solution I think works okay is simply adding
The monitor my browser is on has 2560 width, but the client area of the browser window itself isn't much more than 1200 pixels wide. I keep terminals and the tree-style tabs to the left of the browser.
Edit: A solution I think works okay is simply adding
to the css properties for p.