I think it's cook they are listed as free, but it also scares me in a way.
One egg white isn't that large, and its about 17calories an egg white. I'd worry about going overboard and taking on an extra 100calories (or more - who knows) just by "sneaking in" some egg whites because they are free.
WI1: -3.4; WI2: -3.6; WI3: -3.0; WI4: -0.4; WI5: +1.6;
Okay, really what's with WI4 and WI5? Now I am being extra careful!