AIML?

howdy good folks at SW

Looking at some options to model AI on the web
and wonder

there seems to be no interest/activity in W3C

is there any known reason?
is there no interest, are there no peoples or
does W3C have alternatives?

Here
re.: http://ai.wikia.com/wiki/AIML
it says

 A semi-formal specification and a W3C XML Schema for AIML are available.
but I cannot find it

does anyone have any background info?
is AIML no use?

thanks!!!
-- 
*A bit about me <https://about.me/paoladimaio>*