Web workers don't have support in older browsers. From web workers you can't touch DOM. Between workers you can't share resources easily.
-- Fri Dec 27, 2013 11:02 am --
I've changed MOOPH a little (window.performance.now() + fallback to new Date().getTime()).
-- Sun Jan 05, 2014 12:57 pm --
I've changed MOOPH again. I use .call now for better object oriented programming. I also changed examples. All features of MOOPH are covered now.