It is the old trots WA twitter site. They do pre and some post race interviews (links to stories and podcasts). I am not sure who administers the account but it is pretty a good resource. Some of the drivers are a bit generic but others can be quite funny (Chris Voak springs to mind). Matt Young will sometimes does the interviews and then run up and call the race. They pretty much have pre race interviews for most country meetings, either individually or when the drivers are in the parade rings. I have only got into to this sort of thing recently so others may be able to provide a more accurate summation.
Trots WA has a Facebook site but that isn’t as immediate.