[icebraining]

No version of IE - not even IE9 - supports pushState. Nor does the Android browser, for that matter.

http://caniuse.com/history

[lparry]

Too bad for IE users. They've said they're redoing it to given users of modern browsers the best experience, and if you use a crap browser you just get full page loads. /#!'s are getting kicked to the curb

[udp]

It's easy enough to use pushState where available and fall back on #!

[jonursenbach]

Or just failover to full page refreshes, like we do at gdgt.

[TazeTSchnitzel]

Not strictly true. IE10 supports it.