While I certainly have some differences of opinion with Tobin, MC, and the rest of the PM team, I do want to express my sincere gratitude for their work! In particular, it's nice to have browsers that work with modern Web sites, but that don't employ the "walled garden" strategy of Chrome and Mozilla, requiring every add-on and the like to get a digital signature from the "powers that be."
I understand that Chrome & Mozilla are trying to guard against malware, but the potential for abuse of "walled gardens" is clear, especially when Google or Mozilla has different interests than the add-on developer (as we've seen with the recent flap about Chrome threatening to break uBO).