Mozilla Minimum Font Size
As a follow-up to my earlier post about Jakob, Mozilla and font sizes, it seems Mozilla already addresses this issue without even having to resort to a full blown manager. According to the list "101 things Mozilla can do that IE cannot", item #43 says Mozilla allows you to set a minimum displayed font-size for all web pages. They realized that the main reason for wanting to modify the font size is because something is too small to read. Tell Mozilla to not go smaller than a certain size and you are home free.