How do I change the zoom increment that is used by Firefox whenever I zoom-in or zoom-out of webpages? I find that the default zoom increment is a bit too big for my taste.
You can do this as follows (tried it with FF 10.0.2 here):
This will show you the various zoom "steps" the browser has. The steps are specified as as decimal numbers (representing precentages of the original, so .3 means 30% of original) separated by a