I've often had this fantasy of sending Hulk Hogan in for an interview that claims they are looking for someone who is aggressive and let him behave overly aggressive.
"Well, Buddy," he would scream, "Do I get the job? Am I aggressive enough for you??"" And then watch to see if the employer says no or if he timidly agrees to give him the position while politely asking Hulk to remove his grip on the interviewer's tie.
But back to the subject. Maybe women can act the diffident maybe-I-want-this-maybe-I-don't type but I just don't think it would go over well for a man to use it.
I'm calling b.s. on this. I understand the idea of appearing to be in demand but, frankly, I'm draining money while I'm playing coy. This ploy works better when you have a job and you are seeking an upgrade but I really wouldn't advise this for folks who are unemployed.