How many people use our website at present on a daily basis is hard to estimate at present. This is a cool idea as it suggests to advertisers that they can get maximum value as their ad will only be seen by an individual once. Unfortunately this is not correct. My understanding too is that large corporates such as Eskom can operate from a single IP address yet have thousands of users which they connect to the net. But if measurement challenges on the internet sound difficult or even hopeless, consider how conventional media measure their audiences.
Newspapers have auditors to verify sales.
Then survey data are used to guestimate how many readers see each copy. I was told the figures a short while back for the viewership of the television show, Business Tonight. Maybe internet usership will also only be accessible through survey data. Back to the e-mails. We have plans in the pipeline to offer more e-mail services and to vary those already on offer.