These FREE Web sites are among my favorites:

noeltyl.com is a monumental astrology site authored by Noel Tyl.  Three columns updated monthly (Analytical Techniques, Counseling Insights, and Notebook) and an active wide-ranging open Discussion Forum in which Noel frequently contributes his professional insight from his vast experience.  Also contains information about Noel's astrology courses.

StarIQ.com is a refreshingly unique astrology site that offers free personalized forecasts by email, original daily content on astrology and sports, health, celebrities, finance and other subjects, as well as a guide to astrology conferences, organizations and practitioners worldwide.  

The Astrology Matrix is an on-line interactive astrology reports (real-time astrology/oracles), Astro*Index (Online encyclopedia), online astrology bibliography, real-time search for charts from 20,000 celebrity charts, and more.  By the Win*Star Software people.