Seriously, joke aside ... It scares me to think that there may be one or two real nuts case here.
Schizophrena is no laughing matter. It is a mental illness. I do think that if there is a real case, it is our duty as fellow bro & sis to help the person to seek treatment, no? Boss Sam is right ... there may be more that meets the eyes.
As long as you don't meet anyone and give them your real contact details, you will be ok.