Originally Posted by Charllie Expand on that second remark Salathe.

Iframes are not the only way to push a file to the server without resorting to the traditional methods. There are alternatives, but each have their problems (as do iframes) and as far as I see it none are perfect at the moment. Hopefully the situation will improve given time. Using the Flash player for file uploads has been getting a lot of attention, and support, recently for example.

Like I said, I've yet to find an ideal solution but to say that using iframes is the only method was just factually incorrect. Buuuuttt, this isn't the right place for this discussion really.