If the reader is good, you should value & respect him or her.
If the reader is a con, than yeah, give him bad advertising.
Now, if YOU became addicted, that your own goddamn problem, You are the sick person, not all readers are crappy.
How could a well-educated TV executive let her addiction to psychics cost her £25,000 and ruin her marriage? By being a complete idiot. Please, remove yourself from the gene pool.
How many times do we have to flush before this sort of person goes away?