After the dot.com euphoria of the 1990s, the growth of online retailing has been slower than expected. However, some products are better suited to internet distribution than others. CDs, books and software have been the most successful product lines so far. This is for a number of reasons. Books and CDs are relatively easy to mail to buyers, and software can be downloaded direct from the internet itself. The enormous range of titles which an online retailer like Amazon can offer gives it an immediate advantage over its high-street rivals. Of course, the demographic profile of early adopters of the internet as a purchasing medium, predominantly male and upmarket, provided a very good fit with the relevant market segments for such products and services.