I had a great wingman for years with whom I shared referrals. Once you know someone's taste matches your own you know you can trust their recommendations. It's a very valuable resource.

Is this a trick question?

Yes, of course, guy friends often recommend women they think their friends will enjoy, and it really is a two way street. I have personally been on the receiving end of fantastic recomendations from not just guys here, but providers as well.
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In fact, on sevral very memorable occasions, a provider has said something like, “Rob, you would be a perfect match for my girlfriend.” Sometimes I will also get tips about another woman from a provider friend who has met her through a meeting a client arranged, such as a threesome date.
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I have also received recommendations from women who met other women at M&Gs or through other networking events. That said, I don’t want to imply that most recommendations come from women as that wouldn’t be accurate. 90% or more recommendations for providers come from other clients I know.

Sure, only to my close inner circle of amigos

I run with a very small group of guys and when we do our guy trips to Vegas I’ll set them up. Because discretion is of the upmost importance to them, I’ll doing the match making or leg work.
But when we get home… nobody says shit. It’s Our lil secret