The online Census form had built in processing. The form changed on the fly depending on what was entered in each individual box. For example, if you ticked ‘self employed’, it instantly removed the questions about employers and replaced them with questions about the business. That kind of responsiveness could be programmed into the web code itself to some extent (which means it would be processed on the local computer), but there’s a chance that it was submitting the information to the ABS site for validation.

More likely a ‘form submission’ was on a per page basis. Conditional processing within a page makes sense locally, but it would be poor design indeed if each pages wasn’t sent back to the ABS’ servers as it was completed. Would each page submission count as a ‘form submission’?

I submitted about 30-40 pages before it crashed out on me. If each of those was a ‘form submission’ and there were several million people doing the same thing …