My other concern is that it's only awkwardly compatible with Artisteer templates. Artisteer seems to use values in px, which doesn't adjust unless I manually edit their CSS to change to 100%; then it works fine for the text. However, this seems to be more of an Artisteer issue, since I couldn't get any other font-sizer extension to work with the px either.
Hello, I had sent a second comment about my review (above), saying that I found a work-around for the Artisteer compatibility. In order to be fair to both Fast Font and Artisteer, please add the following comment to my review:
After I posted this review, I discovered a way to make Fast Font compatible with Artisteer. In Artisteer, set the article text font size to "default" and the text will resize in Fast Font. Unfortunately this doesn't work for the headings, but at least the text will respond to Fast Font adjustments.