Girls - what is your opinion of the girl calling the guy to get together if they have in the past.  Also - if the guy is unavaliable due to family plans, or plans with friends why would she get upset?  Sometimes plans can not be broken.

There is no reason why she should get upset if you cannot see her. Moreover she should never call you unless you have told her that you are single and that she can call anytime! Discretion is very important in this field. Phone calls or texts should never be send out without prior permission or notice. This sounds like a needy mistress/husband "Sometimes plans can not be broken" What in the hell???

In my case, I'm single so I can do whatever I want.  But if I had a family or a SO, then I would be very clear in telling girls...DO NOT contact me.  I will contact you.

Even so, with the economy where it is, women are definitely becoming more aggressive.  I have an UTR girl I met on Craigslist that is always wanting to meet up every single weekend, even if I haven't contacted her first.

At first I thought, well, maybe she just enjoys my company and doesn't care so much about the fact that she gets $150 and spends three hours with me.  So to test her I did the old, "I'm kinda tight on money now" shuffle.  It wasn't that I didn't have money; I just felt that if she were that aggressive, I didn't need to put in any effort.  And I have better options, anyway (body is 7.5 or 8, face is about a 6).

Well, of course she wasn't available to see me when I didn't have the money (surprise, surprise), even though it was a pittance of $150.  So, yes, sometimes it's all about the money.  

Very tacky for anyone to be calling for business, unless you flat out said "Call me anytime." Even then, not my style.