It is, but if you refer to this handy dandy graphic:
The only countries to use MMDDYY are the United States, Micronesia and the Marshall Islands (magenta) totalling about 326 million.
The cyan region represents 3.57 billion people using DDMMYY: Asia, Australia, New Zealand, Europe, Latin America, North Africa, India, Indonesia, Bangladesh and Russia.
The yellow group, another 1.7 billion do use YYMMDD.
I am actually curious why the US standardized on MMDDYY, I would think we inherited it from the UK, being a colony originally and all. But the UK doesn’t do this?
No we’re little endian like all of the other countries we invaded civilised colonised 
One thing that will increase the usability of this plugin as well as the awareness of this feature on a forum, is adding the ability to add the birth date field on the registration form.
Actually, it feels a bit weird to me that it isn’t possible already. 
(Btw, the plugin is awesome we just installed it on an already working forum of 4000 users and we are pretty happy with it in general.)
