The arguments about liquid design, scalable fonts and line length comes up again and again. You may wish to track down one of these publication for the next time it springs up.
“Line length was found to be a significant factor in influencing reading rate, whilst comprehension remained relatively constant. Long line lengths (about 100 characters per line) were read faster than shorter lines. However, this line length is judged as least easy to read, and people are generally in agreement that 55 characters per line is the easiest to read. ”
later that same day
A couple more items
Dao of Web Design is a great article on accepting the medium’s nature.