Incompatible w/ Firefox 9+ Rated 2 out of 5 stars
Unfortunately, despite being marked compatible, the extension does not work (Site Options menu doesn't make text larger, nor is minimum font size respected) with Firefox 9 (currently in beta) or later.
Firefox Mobile doesn't have a way to report extensions that don't work either.
Rated 5 out of 5 stars
Firefox Mobile’s second killer feature after sync. Makes it easy to resize text (without uselessly zooming the entire page), and the new “Minimum font size” feature is essential — I can actually easily read web pages on my phone now!