I'm sure that's a use for it but I've generally heard it used to demonstrate value and to get her to qualify herself, depending on where you are in the grand scheme of things.

By interpreting the results as undesirable you can also use it to disqualify your interest (therefore generate attraction).

As a 'mind reader' and to generate curiosity the 'Strawberry Fields' routine generally works better for me. I'll post it later today.

I'm pretty new to this stuff also so if I'm wrong, a more experienced PUA can put me right.