Hey--a general newbie question for anyone to answer... In reviews I often see people say "VIPs read on, but for the rest... definitely see her" and variations of this. I have no idea what this means and I have not found answers in the TER newbie FAQ are or from any google search. Typically VIP refers to high-price escorts, right? But the reviewers consistently refer to the clients as VIPs or non-VIPs. It is confusing. Can someone please explain?

This is kind of obvious, but you're not seeing it. VIP does refer to the reader's TER Membership Status: Basic or VIP.
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You have already written some reviews so you know that there are two sections of prose details: General and Juicy.  General is viewable by Basic Members (as you appear to be) and is only supposed to contain limited, GENERAL info. The Juicy Details go into more specifics about the session and the interaction.  
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To be brief and to the point, a reviewer may post in the General section his main recommendation:
"must see", "will repeat" (a good thing), "avoid at all costs", etc. but promise more details in the Juicy Details which is only viewable with VIP membership, hence, "only VIPs can read the Juicy Details to find out why she is a must see" = "VIPs read on".   Basic Members are stuck with the short version.
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I'm guessing that you do not have VIP membership. (But you should have some free VIP left since you have several recently approved reviews.)

That's how one gets VIP membership, by acquiring VIP days in some way--writing reviews, submitting problem reports, paying for VIP, getting VIP days as a gift, etc.

Yes, thanks for this, it's painfully obvious now... However, this is what I believe led to my confusion: I pretty much signed up for VIP off the bat. So I have been seeing the full version the whole time. (What I did is simply bought the first month. Then I started with the reviews.) The one exception was when I FIRST came to the site. It was blanketed by so many "VIP onlys" that I simply assumed everything, including ALL of the reviews, were available only to VIP members. I didn't notice that part of the review IS available to non-VIPs. As soon as I perused the site again, without logging in, this became all too apparent.