I have done this a few times with good results but there is still no guarantee. I have also been burned a few times.  Keep in mind that a woman could be on the agency's website for a couple of months but actually only have worked for a few days.  

Any reputable agency will stop representing a girl who gets complaints but that does not always happen right away. Any reputable agency will also try and make good with a loyal customer on a bad appointment.  This does not mean that you will get a refund if you see a girl and don't click with her (YMMV is reality) but if you are a good customer the agency will generally work with you if an appointment does not go well.  I have received discounts and even a free appointment or two for reporting bad behavior to an agency owner rather than just showing up on TER and whining about it before contacting the agency.

In short, it's a judgment call that really depends on the over-all reputation of the agency.

That's a very good question..

It could depend on the agency. Some agencies will only hire providers that work up to a certain standard.
I would first ask if the agency's reputation is solid. That would be my determining factor.

There are several agencies that are local to me that I would not hesitate to see an un-reviewed provider, and have done so on a few occasions.
There is always a possibility that there could be a lemon from time time, even with the best agency.

My answer would be to go for it.
You have 3 good experiences with the agency, and I would be expecting the same satisfactory service.

If she was an independent my answer would be to pass.

If the Q is LE related, more than likely you are OK if you have used the agency before.

Now, if the Q is service related I can tell you about a couple instances

1.  After the session, I called and asked the owner/booker if she had been to the gal's incall location.  She said "No, why?"  The place was poorly maintained by landlord, and the gal's BBBJ skills were a LOT better than her housekeeping skills.  And the BBBJ was only mediocre.

2. Sometimes the agency/booker has never even met the gal in person.  One gal told me she had just arrived in town.  Later, agency asked me some follow up questions.  "How was she dressed?"  Stuff like that.  I then realized, the gal was hired "sight unseen".

My opinion is completely biased because I am that girl!  I work for an agency, have been there maybe 3 months now.  I don't have any reviews because I haven't been there that long, and I've been kind of shy about asking clients to write me one.  The other ladies I work with have been there longer, and are well reviewed.  I don't see why a guy wouldn't take a chance on me if he liked my pics and my bio.  But again, I am just biased.  I haven't met a client yet who wasn't completely satisfied, and I have accumulated some regulars already.  So I think taking a chance on me even though I don't have reviews yet - it's still a pretty good chance that you'll have a GREAT time.  But again, I am just biased here.  

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