APA Ethics Committee Statement on Online Services
A statement from the American Psychological Association.

Internet Addiction Guide
An excellent article on Internet addiction by John Grohol, PhD. Is Internet addiction a theorized disorder?

Internet Counseling is Alive and Well
From Counseling today, an article on current and future Internet counseling practice.

Internet Counseling
From your About.com Guide to Social Work, organizations and sites related to Internet counseling.

You Can't Do Psychotherapy on the Net Yet
From your About.com Guide to Mental Health Resources, an excellent article covering legal and ethical issues.