My Shopping Cart

Do you remember when websites used the second person to address users? (Remember that it was ‘Your Shopping Cart’ before it became ‘My Shopping Cart’.)  When would you say we made the switch? Was it with ‘MyYahoo’? If so, who decided that the shopping cart should be inside ‘my’ head instead of inside ‘your’ head? I’d like to see that proud person eat 20 ham sandwiches in a row.