As an added bit of information, there are two different forms of Dianic Wicca.
The Dianic Wicca which was started by Z Budapest is truly for women only and honors only the Goddess. There is no God figure in Z's tradition of Dianic Wicca. There is an excellent article on this branch of practice at http://www.witchvox.com/va/dt_va.html?a=uswi&c=trads&id=8451
On the other hand, the McFarland Dianics not only include men in their circles, but also honor the God as consort of the Lady. The Goddess does remain as the primary focus of their practices. More information about the McFarland Dianics can be found at http://www.mcfarlanddianic.org/faqs.php
Since Wicca, as it was originally created by Gerald Gardner, was a fertility religion which was based on the relationship between the God and the Goddess, and since the Wheel of the Year celebrated that relationship from courtship to sacred marriage to childbirth, to death, there are many who feel that a Tradition which eliminates the male should not be considered Wicca at all, but rather a separate form of religious witchcraft.