E-commence is one of the fastest growing industries in Canadian On-line Business Sector. According to Statistics Canada, Canadian online sales went up to $15 billion on 2010. Top-20 sellers offer various services and merchandise including: Tickets for travel and entertainment, Books, magazines, Clothing, jewelery and Software. Nearly 74% of Canadian internet users participated in Sales or Pre-sales (flyers, coupons, deals...), thus pushing online sales up to 114 million orders / transactions per year.