These styles are much closer to the style of bondage scenes in mainstream television. As the availability of free pornography on the Internet has increased, its possible effects on microaggression towards women have been discussed. The concern has been raised that since bondage pornography mostly depicts women (who are portrayed primarily in situations of female submission), such pornography may promote an attitude legitimising violence against women. The book series and film "50 Shades of Grey" has been said to perpetuate misogyny and portray BDSM/bondage subcultures in a patriarchal and misogynistic light. In this view, to properly reflect the BDSM/bondage subculture it is necessary for pornography to "focus on mutual consent, mutual power, and communication," as in the film "50 Shades of Dylan Ryan". BDSM is an initialism for "bondage and discipline, sadism and masochism" and can also include other D/s (dominance and submission) practices. Since consent, communication, and equal power exchange are fundamental in the BDSM subculture, pornography that is made can ultimately be used as educational for the inquiring practitioner.