If I had to guess, I've been using it for around 3 years and 2 months now, because that is how old my Portable Apps website account is. I have been using Firefox Portable for many years. So I want to go ahead and say, thank you.
Too many developers think that I am ungrateful, entitled, that I expect them to rush to make changes, etc.
First of all, I want to thank you for Portable Apps and Firefox Portable.