The site of the Dutch ABN-Amro offers these services. However, commercials do not work as well on the Net than on television for example. This may be the case when products are not suitable to be sold through the Net or when manufacturers want to let retailers do the selling, like Ford Nederland B.V. . The eventual goal of almost all companies of course is a larger turn-over. Some products and services, like books and software, are very suitable to be sold via the Internet.
People can order, pay for, and in the case of software, directly own the product.
This approach fully takes advantage of the possibilities the Internet offers. For example, visitors can be showed a site that considers their wishes and interests, based on their unique profile. Altavista for instance often shows banners associated with the words you searched with. Push channels also use this approach. But we can even go further.