Writing is more like a proactive skill. You don't practice unless you really want to. I don't think we get a lot of writing practice in Australia. You have to speak and listen because you are in a English speaking country but you don't write a lot here. Even I have been here a long time but my writing skill is still very basic. A lot of students I met here say they wrote a lot of rubbish when they took a look at their essays.
I exchange heaps of emails with my colleagues everyday. What I expressed in my emails impressed people deeply and had them convinced. However, when it comes to oral argument, I was smashed very often, that's how I feel frustrated very often especially in the regular internet meetings.
I'm bloody desperately eager to improve my speaking and listening.