The ability to have multiple fields for all countries available without having to add them one by one! It's easy to use and it has been very helpful solving our problems with addresses. There are some minor bugs here and there but nothing major as of now. I would recommend this product if you need more than just AUS field support. We needed something like this to help us solve issues when people change their email/address and try to update their profile. This helped us avoid many customer service calls from confused customers who had changed their emails while trying to login.