Mark the difference is that the List is just a statement by individuals of stating that they will not slab chips and that they will not do business with those who do.

The Chapter is an organization whose goal is to educate collectors about the slabbing issue and promote the collection of slabfree chips.

Some members of the Chapter believe slabbing is bad for the hobby and have joined to help spread the message, but they don't believe in the boycott so they do not sign the List.

The question of what is in Chapter membership for you is an interesting one. SlabFree is not the kind of Chapter where we have monthly get togethers and trade chips and send out newsletters and the such. What is in it for you, is the benefits of keeping Slabbing out of our hobby.