This article is from the Magick Tantra FAQ, by Tyagi Nagasiva firstname.lastname@example.org, Catherine Yronwode email@example.com with numerous contributions by others.
Tantra yoga is a Hindu and Buddhist religious practice. Even
stripping away the Asian parts of it will not remove its
essential religious nature. The loose use of the term tantra
these days to signify any sex-positive, sex-mystical, sex-
magical, or sex-religious discipline is deplorable. Tantra
includes and often transcends sexuality; preparation for
sexual tantra includes serious work that is not sexual in
nature, and tantra practices are diverse and conflicting
on this topic even in their native cultures.
For further study of classical tantra yoga, see the newsgroup