Thanks for sharing this! I have always been concerned with designing sites at certain sizes, where screen resolutions change, or more importantly from the article, browser size. Even with people preferring to use browsers at 75% width, as screens increase resolution the widths of websites still might be an issue.
I have been a newbie with some of the units used today, but I design websites using the relative em unit. I wonder if we will be safe designing websites with the em unit and making the page widths 75% of the full em width of a page? Anyone know what the full em width of a page is or is it variable?