A: OK, there are many different theories, but I haven't come across any real (scientific) evidence as yet but it must be out there, to how to best keep your ground coffee so here is my recommendation. Refrigerating the beans will slow the ageing process down, but often the other aromas in the fridge space like casseroles and marinades and other flavoursome foods often give of a lot of aromatics. If you store your coffee in the fridge its desperately trying to absorb any moisture it can, and more than likely will absorb the aromatics floating around inside the fridge. 

The freezer on the other hand essentially stops the ageing proccess and keeps all its contents in suspended animation. Removing the portion required and replacing the ground coffee immediately back in its place in the freezer will maintain it far better with less possibility of cross contamination of other products. Because the coffee is ground it almost and has very little mass, it will defrost almost immediately and will certainly be ready for its extraction. That being said, I would alway recommend buying your coffee in smaller amounts more regularly. 

Please note: > Keeping your beans cool dry place with your red wines maybe.