I've had a hard time finding a provider I want. If I do find some one that I want, the review information can be old and I won't be able to get in touch with her. I've recently thought of different ways to search and it has helped. I was hoping people could add to the list. I'll list them all even if they are obvious.

1. TER Search reviews
2. Verify TER review by searching BP for recent ad
3. TER Regional Board and Regional Ad Board-they are not just for socializing!
4. See 2. with Board information
5. Search BP with keyword 'Reviewed' (or TER, the url, or review)

does not mean they are.  They figure you will take their word for it, esp if they don't tell you where they are reviewed, and not look for their reviews.  I called one girl out on that (one of her pics that she posted was stolen), and she gave me some lame excuse.  Never did find out where she was reviewed, and I looked at other review sites----nothing anywhere.  Have not seen her ads in a few days, but I expect to see her pop up again soon on the local BP ads.  Needless to say, she had no rates posted, and used the same two pictures in every ad.  Used tineye, found where she got one pic, could not find the other one.

Bottom line is, if you can't find some current reviews, or another hobbyist you trust to verify her, move on.  She ain't worth it.  Your list is pretty good, stick to it.  Remember, there are other review sites out there, check them too, as not every provider is on this site.

Swim

There's much debate about the list, and it's usefulness, but it is another resource. The fact it takes 20 reviews to make the list gives you an idea to the legitimacy of the ladies. You can form your own opinion once you look at it.

When looking to see if ladies have reviews here or another site google her phone#,email,and website.
If she has reviews the links to the sites should come up in a google search.

I'm not sure if this is part of what you mean, but if you've found someone you'd like to contact but their TER Profile info is incorrect (changed phone number, expired ad / link) you can inquire on the "In Search Of" board or on your Regional Board for help. "Does anyone have updated contact info for ...?"

Thre funny thing is ads which say "Well Reviewed" or "TER Reviewed" and even have a link...  but no one who reads the review would book with her!  The mere presence of review(s) does not guarentee it's a good one!  Really need VIP to do the full research regardless.  
The scammers figure most guys are too dumb or cheap to read the reviews.  Sometimes just the intro is enough, other times need the juicy details.  Let's all prove them wrong!
H

... some will put it just to show they aren't a fake even if they aren't very good or the reviews aren't exactly complimentary. I won't say most guys are too dumb or cheap to read the reviews but there are just as many guys who don't "vet" a girl because they expect not to or don't want to have the same done to them...nasty cycle. For the guys more than the girls VIP is much needed. I've told my share of guys that 20 or 30 a month can save you hundreds later.

you should be able to search for her by her stage name, phone number & email (each separately).  If you don't find it, I will ask.