1) Sites with multi-column or table design that can show more information when the browser window is wide. I tend to widen the browser window to get the most out of these pages.

2) Sites like Daring Fireball that have a fixed width, so I can still read the content just fine whether or not the window is wide.

3) Sites that expand the line length to wrap at whatever width the browser is at. I find these impossible to read unless I narrow the browser window because I lose track of which line of text I’m reading.

Types (1) and (2) are compatible and make up the large majority of sites I visit. Type (3) isn’t compatible for me, so I find it inconvenient. It’s not the end of the world, but it slightly inhibits my desire to visit such pages. I’d rather not maintain a multi-level navigation hierarchy with multiple windows and multiple tabs in a window.