if it was only about giving them space all thebasement dwellers and WOW addicts would have plenty of pussy:P
Attraction is created naturally as you live your life. Don't think that girls don't observe their surroundings. Truthfully, it's quite the contrary. Obviously you have to make yourself somewhat available in order to give her the chance to fill space. In my opinion, creating space is not literally about voiding yourself of contact with a girl...it's more about being outcome independent. Being indifferent could lead you to have plenty of conversations with a girl, it also could lead you to not talk to her for months or years, simply because your doing you and that happens to not involve her.
The fact is, once a girl is attracted to you, regardless if you are attracted to her or not, if you are truly indifferent to the outcome of your interactions with her, she will drive herself crazy over you because she is invested more so than you are.
I realize that last sentence was worded awkwardly
Feel free to write the above concept in better fashion