We have halted business with Canadians until Bill C-31 is more clear as they have only released a rough draft so far (not to mention it is quite vague).  More details will come this year, but from what it looks like it will be more geared towards BTC/CAD exchanges even on the private level (localbitcoins.com is an example).  We have placed the limit as to who may purchase from us just in case there is more that comes from it that would extend to what we are doing.  In the worst case scenario, we simply continue dealing with non-Canadian customers.  No matter what happens though, we are obliged to fulfill our side of the deal and pay our customers out for the entire 5 year term so even if we were to shut down for any other strange reason we would still have to pay you out.  Most of our mining operation isn't even in the country anymore, but I think the most important thing is to place a temporary restriction on Canadian orders until we know more details of what's going on.