I find it more sad than interesting. There is already a donation feature on Add-on site and how come he can't sell his stuff on his own?

Also he somehow forgot to mention that he now packs url fixer with another add-on, opt-in but still. What happens if set on $$$. People do not like https://addons.mozilla.org/en-US/firefox/addon/2871/

Not like Mozilla do much clean up of add-ons as it is. Mozilla marketplace will be same copycat chaos just not free - and with noisy arguments of who made what, like originally. Mozillas name is useful for a marketplace but they should stay out of it.

Clueless end-user who thanks to marketing pay for advanced security software but not prepared or able to manage it correctly. MSE is about the level majority can manage, ends most "need for whatever new layer of defense" debates. More advanced stuff which can create problems in mysterious ways is for the chosen ones. KISS and less marketing BS is the answer :)