Thanks for the info Eric, that article made for an interesting read.
I'm using Google analytics from now on!
The only advantage with Supertracker is that it tells me if someone added an item to their cart, so I can tell if people are adding products but not checking out.
With this in mind, I've added some event tracking code to my 'Add to Cart' button to log it as an event. This is working well.
What I'd like to do now is be able to log if a customer presses 'Add to Cart' but the item they are adding is out of stock.
The trouble is I don't know how I can tell when they press the button if an item is in stock or not!
Have you got any ideas how I can track customers attempting to add out of stock items to their cart?