The ULTIMATE newbie bids you all greetings!  I have scanned the posts and have not been able to find an concise answer to my question.  Is my hard earned (no pun intended) donation for TIME or SHOTS ON GOAL?  I have read several very vague answers but nothing to the point.  Any clarification will be immensely appreciated.

Short answer, you are paying for her time.  If you have chosen well and are capable, MSOG is generally allowed within the constraints of that time.

Depends on who you see. If you get some cheap girl off CL, most likely you get one pop then she is outta there.

If you set up a date with a well reviewed lady on TER who has MSOG on her review page, then you can shoot as many times as you can in the time you have with her.

b-

Providers all have different 'rules'. Some are one shots, others MSOG and even some providers change it up sometimes. Just read her reviews and for God's sake don't ask her in an email or on the phone!!!!!  You will likely be hearing a dial tone instead of a sexy voice!