We have customers, who spend all day, everyday watching the activity of their customers in the Who's Online Enhancement. Now you can see what pages your customers are, how they found your site, their IP Address and their shopping habits. This feature can be very insightful and addictive. There is nothing more intriging but to see a customer enter your site, browse a little and then checkout and gain a sale.
Although you can see what pages your customers are on, you cannot see any financial details only their progression through the checkout.