Limit the width of your posts.  The blogs that dynamically adjust the width of their posts to match the window resolution usually results in me not reading them.  Sorry, but it’s unpleasant to read a 700 word post on one line.  That’s a bit of an exaggeration, but with larger resolutions you can still end up having horribly formatted posts.

Supposedly 70 to 80 characters per line is optimal.  I don’t think you have to go that narrow, but have some kind of max boundary.