If only 30 types of the 100 HPV viruses can be passed sexually, how are the others passed?

There are more than a 100 strains of HPV. About 30 of those are strains that are transmitted through skin contact in the urogenital region. In fact, most strains of HPV are not urogenital or cancer promoting. Even fewer than those thirty are found in about 99% of cervical cancer cases. These strains can also be the precursor to other cancers, such as anal, scrotal or penile cancer in both men and women.

All strains of HPV are trasmitted through skin contact. So this means that one person can have an opening in his or her skin and either contract the virus from a gym floor on the foot, through a small open wound on a finger or from microscopic abrasians on the genetalia acquired during sexual activity. Only certain strains will infect certain regions of the body. Plantar's warts, for example, which are on the feet are strains 1, 2, 4 & 10.

So when someone says he or she has HPV, that person may usually be referring to a urogenital strain that causes genital warts. But chances are most people have some strain of HPV on some part of their bodies. However, in the course of a lifetime, 80% of people will be infected with a urogenital strain. When discussing such a complex virus, it is important to be specific about which strain, region of infection and symptoms.

Herpes is a Sexually Transmitted Infection (STI) caused by the Herpes Simplex Virus (HSV). There are two strains of the Herpes virus that are sexually transmitted -- HSV-type 1 and HSV-type 2. HSV-type 1 most commonly causes blisters on the mouth or facial area, and is therefore known as "oral herpes." HSV-type 2, more often causing blisters and ulcers on the genital area, is commonly called "genital herpes." However, both types can cause either oral or genital infections. Once a person has contracted HSV, that person remains infected for life. Most of the time the virus is inactive and causes no symptoms, however many infected people experience periodic "outbreaks" of blisters or sores
http://www.shs.unc.edu/library/articles/...
HPV is the name of any type of wart. Yes certain types of HPV can cause genital warts but the other types can cause warts on other parts of your body, i.e your hand, face, etc. All HPV is transmitted through direct skin to skin contact with an infected person.
http://www.cdc.gov/std
HPV runs the gamut from causing genital warts or cervical dysplasia, to common warts on the hands and feet. That's why only some of the viruses are passed sexually.
More than 100 different human papillomavirus (HPV) types have been characterized. Some HPV types cause benign skin warts, or papillomas, for which the virus family is named. HPVs associated with the development of such "common warts" are transmitted environmentally or by casual skin-to-skin contact.

A separate group of about 30 HPVs are typically transmitted through sexual contact.

Non sexual HPV-induced conditions include common warts, plantar warts (on the soles of feet), subungual or periungual warts (under or around the fingernail), and flat warts (found on the arms, face or forehead).