2020: Still the worst add-on ever. Works on one PC, won't work on the other. They need to fix this.

2019: Spent MANY HOURS over 3 different days trying to get safari to sync bookmarks to firefox, but it just isn't going to happen. The most obtuse instructions ever, not clear at all. If the only way to do this is to add the firefox mobile app to my phone, no thanks. I don't do that with internet explorer, it just syncs naturally with safari. But firefox, not at all. Horrible app.

pas clair du tout votre truc aucune aide en ligne en temps reel.

very good

me encanta la interfase que tiene la aplicación

Traying to restart my computer with Firefox again looks easier

Too much irrelevant information for me. Keep your screens less cluttered. They are too confusing; I am far from being a computer novice. I used to program in decimal, octal, Cobal, Basic, among several others. To be relevant you must remember: KISS -- keep it simple stupid.