I found the bit of this article on the Canadian penny a bit irrelevant, and perhaps misleading. Or, I'm under the impression that it was discontinued due to the fact that one or two cents were a fraction of the average purchase, rather than some sort of initiative to discourage cash usage.

I'm not very interested in using Bitcoin at the moment, but I like how its design could enable me to have some representation of electronic currency that could give some of the decentralized flexibility of cash. Perhaps a cashless society could employ structures such as those.