We should convert our society from the current system of easily transferable electronic money to one based on large heavy cinder blocks as currency. No longer will a spammer be able to access your bank account electronically and siphon off your funds. You will have a large cave or other storage area where you accumulate your cinder blocks.

It could work! See "Burkina Faso" http://uncyclopedia.org/wiki/Burkina_Faso Currency: Giant Stone Wheels, Bananas

I bet they didn't have any email spam.