Is a trip to the nail salon for a manicure and/or pedicure on your weekly schedule?
While the majority of nail salons follow their states' rules and regulations for safe, hygienic manicures, there are some nail salons that don't. Nail salons that fail to follow these hygiene rules and regulations can lead to all kinds of health problems. In fact, just having cracks or broken skin around your fingernails can lead to HIV / AIDS, as well as other infections.
The good news is that by following a few simple tips for hygienic manicures can mean the difference between fingernail infections and healthy fingernails.

Can you please provide actual case studies where the confirmed route of transmission was cracks/broken skin around the fingernails and manicures?
Technically ANY skin break can potentially be a gateway for HIV. HIV is an extremely fragile virus and cannot survive oxygen exposure for even brief periods of time. Therefore, unless the manicure equipment is literally dripping blood from a previous use, the actual chance of transmission due to a manicure is so small as to be insignificant. Even then, the chance of serioconverting would be less than that when having a blood transfusion.
Certainly diseases can be transferred from poorly maintained and cleaned manicure equipment and one should be diligent in ensuring manicure equipment is cleaned and maintained, but to go from broken skin around a fingernail to HIV not only paints you as alarmist and uninformed but also increases the hysteria and misunderstanding about this disease and how it is spread. In the future, if you can not provide a significant body of case studies indicating that this is a primary route of transmission, please refrain from this sort of utter nonsense.
ummmmmm i totally agree with quakerjono !