I wanted to do her real bad... I had seen her in 2005, she remembered everything about me including the car I drove at the time (which I did not have anymore in 2009) to what I had requested her to wear.  

I saw her in 2009 and had good time, but it got me thinking...

They never forget !!!

Everything about this is YMMV, so why should t record keeping be the same as everything else.

No reason to save, or keep anyone's 411 unless requested.

I have no need for this information, but if a friend requests that I save his contact info. for future fun that is always welcome.  Some men have it, like that & many are single, so it depends on the client.

 
Many have So's in this industry, so respect is a 2 way street.

So they save your email address and send out a mass email to their screened customers re their schedule.  The only problem there is if they don't bcc everyone.  Guys email addresses have been put out to others this way.  And, of course, some used their work address or personal address.  I have no compassion for them if they're dumb enough to give a girl a real-world address or phone #.

I feel they hope I will call them back and store "me" because
i am safe and it is a form of their safety. Good idea on their part.

Prob not but guess what we are too busy with life to even bother looking at the number afterwards don't be so paranoid...............only see this kind of paranoia if someone is up to something shady.