HAVE YOU HEARD OF MAY 19 2013 (5/19/13)?

ok,
so i've come across this date. it's been spammed on message boards and chat rooms, it's been written on money, and grafitti'd on walls.

i can't seem so find a definitive answer on what it means.

so sources say it relates to viral marketing, others say satanism, a doom date such as the apocalypse.

it seems that anon and 4chan are the biggest promoters of the date.

their motto is posted associated with the date.

"5/19/13; expect us"

there is speculation that anon/4chan will stage some sort of large scale event on that day.

thoughts, opinions...?