For the majority of Westnet ADSL customers free VIX traffic will mean that your download cap will last a little longer if you watch where you download items from carefully. Saving much of your cap for necessary downloads, files and utilities that you may need (or want) that are only available from a host located both outside of Westnets own network and also outside of the VIX connected networks.
As with all capped accounts Westnet strongly recommend that you check your usage logs regularly so as to avoid any large unwanted excess usage bills.
Check your usage online now:
https://myaccount.westnet.com.au/Technical/Usage/