First off, I have to draw attention to a small linguistic note. There is presently much disagreement concerning the exact (and original) meaning of the word, "Wicca." It's not my intention to go into detail about these discussions, but I don't feel I can use the term without defining it. Therefore, "Wicca" will be used in this website to describe both the religion itself, (a loosely organized Pagan religion centering toward reverence for the creative forces of Nature, usually symbolized by a goddess and a god.), as well as its practitioners of both sexes. The term "Warlock," although sometimes used to describe male practitioners, is virtually never used by Wiccans themselves; hence I won't use it here. Some do, however, use "Wicca" and "Witch" interchangeably, but I prefer to use the older word Wicca.
Wicca, the religion of the "Witches," has long been shrouded in secrecy. Anyone interested in joining had to glean hints and techniques from books and articles on the Internet, like this one. The Wiccans weren't saying much, save that they weren't looking for members.
Growing numbers today are dissatisfied with traditional religious structures. Many are searching for a personally-involving religion, one which celebrates both physical and spiritual realities, in which attunement with deity is coupled with magick.
Wicca is such a religion, centering around reverence for nature as seen in the Goddess and the God. Its spiritual roots in antiquity, acceptance of magick, and mysterious nature have made it very appealing.
Wicca doesn't seek new members. This has been a major stumbling block to those wishing to learn its rites and ways. Wicca doesn't solicit because, unlike most Western religions, it doesn't claim that it is "the true way" to Deity.
In the past, the only way one could begin the journey of Wicca, was to A) contact an initiated Wicca, and B) receive initiation. Unfortunately, most people did not know any Wiccans, because they did not expose themselves as members of that religion.
However, times are changing. It is necessary if Wicca is to become more than just a curiosity of an earlier age. The heirs of Wicca must point their religion to the future, so that it may have something to offer to future generations. Since we are at a point where one wrong move can terminate life on Earth as we know it, there has never been more of a need for such a religion as Wicca. Nature-reverencing has never been so appealing.
In closing, Wicca is a joyous religion springing from our kinship with nature. It is a merging with the Goddesses and Gods, the universal energies which created all in existence. It is a personal, positive celebration of life.
And now it is available to all.