Regarding the inconvinient way of paying the bills (which is only limited to cards), I would like to know when PayPal method will be available for Optus customers as well? So then we don't need to enter or save our credit/debit cards info for paying the bills which is a unsecure and unconfortable way.
Just a thought if you are concerned about giving these details out you could investigate a second card / account etc. Perhaps an ING everyday account? Or a debit card linked to a new savings account at your bank. Or a credit card with a low limit (or one you can adjust down after you get it?)
That way you can use that card/account for all your online transactions and have a set upper limit (say $500) to minimise damage and inconvienience if they are ever compormised?