I am wondering why should one use internet check in only just to get a seat while you still have to stand in line anyway in order check in your bags.
As an airline employee, I (and my colleagues) have often asked the same question. As far as we can tell, an on-line check in facility was not necessary, what was required was an on-line seating reservation function.
As far as we can see, the ability to print a boarding pass at home is only of any real value to hand baggage only passengers.