As Web sales lose steam — online sales in the US are projected to grow 17% in 2008 over 2007 compared with a year-over-year sales increase of 66% in 2000 over 1999 — eCommerce executives struggle to understand the current drivers of sales growth in the channel. A significant source of increased revenue for many retailers is the growth in online spend by the most tenured Web shoppers. These consumers are technology-savvy and generally more affluent than the general population. Additionally, this population grows into making riskier, high-consideration purchases — such as large home appliances and automobiles — over time.