According to this article, RIM sold 930,000 Blackberry units (all models, worldwide) in the entire first quarter of 2007, and Palm sold 581,000 Treo units in the same quarter. http://www.itweek.co.uk/vnunet/news/2155569/blackberry-tightens-grip-pda Apple just sold 500,000+ units in a single weekend. With a single model. In the US only. At a ridiculous price. In a crowded marketplace. On a single carrier. With entrenched competitors who have had years to build their brands. Can you imagine what this suggests over time? As Apple adds models, markets, and perhaps carriers in the coming months/years, they're well-positioned to blow the smartphone market out of the water.