Payingwithplastic.org
This site is sponsored by the David S. Evans, of NERA Economic
Consulting, and Richard Schmalensee of MIT. It is an outgrowth of
their book 1999 book "Paying with Plastic" (a second edition is due in
2004). As one might expect, it describes changes in the various ways
that consumers can use debit and credit cards. Topics include
research, commentary, news, and technology.
http://www.payingwithplastic.org/