I have field tested the "Cube" to the point it is almost blue.
In my experiences, the "Cube" is not meant to be an opener, or one of the first routines. I have done this in all stages of the interaction. I found the later I wait to use this, the better. Always ask them if they have heard before you use this routine. Be sure you congruently convey you read it in some magazine or heard it from somewhere.
Second, if someone has been "Cubed", flip it around in a way where she is Miss Smarty and she will ask you all the questions. Chances are she won't know or remember and you are able to continue or switch the subject. A couple other methods to overcome the "Cubed" is accuse her in a playful way by trying to brush up on Men's magazines or tell her I need to see how you score.
Third, the "Cube" is not meant to be a centerpiece to the conversation. Be as brief and articulate as possible and stack a more natural unrelated routine once finished.
Fourth, be selective on who and when you do the "Cube". I have seen many women with intrigue when I "Cubed" them and I have seen ones that weren't. The ones were not intrigued, I brought it up too early. Waiting longer in the interaction once you get interest is the best time to pull out this routine.
Even though thousands of us are using this out there, in my opinion, this is an effective crutch when done correctly.