i didn't even know that td would LET you purchase canadian stocks. i've had to use sprott global. 

curious thing though... look at ZEN on canadian stockwath. check to show depth. now look at all the exchanges... see cx2-h? at this time the volume is 194K... now check the vancouver... at this time it's 117K! since the cx2 is an alternative exchange, the volume should be lower than the vancouver. i think this shows that the americans are starting to get very interested in ZEN!