57 years old disabled retired from NHS, Parkinson's Disease. I was cyberbullied/on-line harassed in February 2014 and have been trying to understand how, why and what to do about the problem in general ever since. The more I see, the more seriously concerned I have become. To me this is a Public Health issue and like Dr. Snow in a London Cholera epidemic it is time to ask ISPs to 'take the handle off the water pump'. That is - to suspend a wide slew of perhaps 2-300 individuals access rights on a precautionary and investigative principle . That is, time for the non-'heroic experiment'.