I'm having issues using prefixfree, the jquery plugin does not seem to work in internet explorer 9. (maybe it's just some screwed up setting in my browser, I don't know, but prefixfree itself does the job all right: the initial rotate(20deg) is prefixed)
I have set up a jsbin example showing what I mean: http://jsbin.com/ocipel/2/edit
I tested this in chrome and firefox, which work as expected. Any help is greatly appreciated. (oh and it seems prefixfree does not exist as a tag, so I had to split it up into "prefix" and "free", sorry for that)