I came up with the idea of a statistics mod the other day and I have decided that I will build it as soon as I have learnt PHP and MySQL

For the moment I need everyone's input on what the statistics MOD is going to do, how it will look etc etc yadda yadda blah blah blah.
Here are my ideas so far for graphs...
View graphs of topics/replies/viewings/new users on average (or in total) for each hour of the day/day of week. [ This will enable people to see if the board is used by Americans or people in the UK, and whether the board is used more at the weekend than during the week.
Also show topics/replies/viewings/new users during each hour, day, week, month.
Allow specifying of a particular catergory/board for the above (N.B. Not new users)
Horizontal / Vertical graphs

Frequency of posting for registered users.
Average replies/viewings per message.
The ability to create CSV files

E-mail statistics to admin once a day (send when first post of day is carried out)
I'm thinking of having a main graph with drop down boxes at the bottom to set the options.
This sounds like a lot but most of the items just need what's counted changed.
As soon as I begin learning PHP and MySQL I'll start coding it, until then I'll gather ideas and start designing the screens.
Many thanks for input in advance.
UPDATE 3/1/02 - New idea: keep track of notification e-mails sent (might be useful for busy servers?)