Tested and duplicated on an iPad air here. It's Safari's issue, though.
There's a bug in mobile Safari that I can replicate on other sites. Scrolling on Craigslist's map view when the page is loading also crashes the browser, which leads me to believe it's something related to attaching to events in certain states.
First, a big thanks to all the Zurb folks who work on Foundation, I can't wait to dig into the new release!
Just for the sake of another data point (albeit an obscure one): The page crashed Chrome on my iPhone 4 running iOS 7.03, both with other pages open and as the only page.
