User Activity

This is our first Christmas season. We got going, really, just after the New Year 2003. We're having a great weekend...but when does activity drop off? At some point people will stop bidding because of delivery times. I guess my question is, should I...
What are the pros and cons of listing on the eBay.ca site versus the eBay.com one? We list most everything on .ca (except for store items), and have a .ca store. But I note that many Canadian sellers have .com stores and list their items on the .com....