Internet traffic doubles every 100 days, according to some statistics. This growth has been accompanied by an increase in the amount of online shopping---a phenomenon that has had a significant impact on retailers. Independent bookstores, for example, have been squeezed not only by the expansion of large-scale operations like Barnes & Noble
, but also by the popularity of Internet discounters like Amazon.com
. Online sales of recorded music by both record clubs and start-up resellers have put a dent in the bottom lines of many mass-market music stores---although not a huge one yet. The trend will certainly continue.