Most of the romantics sending e-cards didn't plan on spending all that time filling out e-mail addresses and typing a message without expecting something in return.
Without prior experience, we were already typing much more accurately with Swype's taller and more responsive keys, plus its unique input method was also very refreshing and convenient most of the time.
Without digital ID, we are stuck with the greatest friction point in Web commerce: that redundant typing in of passwords and filling out of home address fields for the umpteenth time.