YES! Mihi placet! I never paid much attention to macrons, because spaces and punctuation is definitely all that's necessary that the Romans didn't use. Macrons can be helpful for learning, but aren't necessary after that. I'm just glad that I can put in whatever case, gender, number/voice, mood, tense, number, person I need without being called out on it. Of course, you have to distinguish in many cases from V and U, but that's no big deal. Est verendum.
Nice one for posting Latin in forums! One thing that is bothering me, though, is that it doesn't seem to handle macrons (long vowel signs) consistently, reporting an error on them in some words but not in others. It'd be really nice if it could check vowel lengths as well :) But for starters, ignoring them would be good.
Please, don't add bad reviews and ratings for things which are only due to Mozilla and not to this addon. The policy of updating can be bypassed by using Nightly Tester tools, or wait or harass developpers for an update, but don't lower the rating because this addon is good indeed. I love the fact we can do classical studies with Firefox!