Top E-Tailers of November 1999.

Online retailer Amazon.com increased its buyers by 50 percent over the last month, according to the latest rankings released by PC Data Online. Amazon.com hosted an estimated 1.8 million home-based buyers in November, ahead of Buy.com and eToys.com, both of which saw significant gains. The top Web drug store sites also held fast to their positions, suggesting that drug store products, especially health and beauty items, may be solidifying their position among top e-commerce circles. PC Data Online estimates the purchase rate based on the number of unique home-based Web users who visit a transaction-related page within each site. The information is gathered through a proprietary software tool that tracks "unique visitors" on each Web site. Every visitor or buyer is counted once, regardless of how many times the individual visits a site or buys from a site.