In Canada you can write to Santa:
http://www.canadapost.ca/dec/santa/w...cid=hd07000327
Most kids receive a pretty standard letter back in the mail (at least I did in the days) but they make sure they catch letters like: "I would like a friend because I'm so very lonely" and write a lot more personal letters back...
Nobody has tried to send a poisoned letter to Santa here... yet.