Per JavaScript on whole site is broken in IE (9 or less) because of stub.js:
We are trying to block a scraper that is scraping against our terms & conditions.
This bug was an unforeseen consequence of trying to ban them client side - not realizing that atob is not supported by IE 7/8/9 (and 10 in 7/8/9 mode).
I am reverting the change and deploying as we speak.
Things should be back to normal soon-ish.