Y o u n e e d t o k e e p y o u r l e t t e r s s p a c e d o u t a n d m i n i m u m 3 s p a c e s b e t w e e n w o r d s .

Looking at the current posted on this thread it seems you are the only one not infected yet. Maybe what you suggest is effective.

I wonder, does it continue infecting members or the member it chooses has been pre-determined?

Not really cause check the other profiles, they are not affected.