I have a few pictures up, but do not show my face, due to my "day job" , My question is.... Does it greatly affect business by not posting pictures of my face in them? Is it worth showing my face, or is it not even a big issue?  

You show enough of your face for all of us to know that you're lovely.   Nice pics!!

but looks like you have something that gives an idea of what your face looks like and if those pics are representative you should be fine.

I think it is fine and normal. You also show enough to give a good idea. All is very nice.

There are so many other things you can do to boost business other than showing your face. If you are prepared for your family, friends, coworkers and possibly LE knowing your identity then go for it but in my opinion it's not worth the exposure.  
You neeeeeever know who's looking for companionship...maybe your boss, maybe your brother or uncle, a neighbor or friend. If someone you know stumbles upon your pics showing your face would that be devistating? If so don't risk it. I have friends who show their face but their lifestyle is not a secret and they do say it increases business

If you have ANY concerns at all, don't do it. I'm out to my family and close friends, but I've never shown my face, especially having had a real job.  

I had an experience a while ago where I screened my own boss at my civvie job 😂 Of course I responded politely saying "i think we are not a good match"...  
Showing face can affect me in many ways, future and current job, friends and family.

All responses were "right on the mark"

I let go of social media a year ago and I still see my face pop up very frequently on Pinterest and Etc. selling hair extensions and the like. My friends are always seeing them too. It really creeps me out.  

And I agree with this poster - you show plenty.  I like the way you did this too.  You have very pretty lips.

...I'm more likely to book if a provider has a face pic. Often when I'm looking to hobby, I'll narrow it down to two providers and if one has a face pic and the other doesn't, I'll usually go with the one with the face pic.  Not a deal breaker though and pics that show part of the face are helpful. Having said that, I can understand the concerns some providers might have about showing their faces.

Facial recognition software is not a thing of the future. It has been around for a long time now. It is being used everywhere. You can Google it to learn more.

Look it up. http://money.cnn.com/2014/09/16/technology/security/fbi-facial-recognition/  

A blurred face is also nice. But with pics and reviews like yours, I'm looking to book.

...identifying a person based on just a portion of the face showing.

Facial recognition software is imperfect. However, it is constantly improving. Do not go by this one article. There are many, many other reports out there to read. I advise you to read more about it. Facial recognition software is improving all the time. Don't fool yourself into thinking it has not improved and that LE isn't using it. They are using it every single day. Post a photo on FB. Most of the time FB already knows who the people in the photo are. How is that? Because FB is testing and using facial recognition software!

I think they know the risk involved with putting their photos up on the internet - with or without facial recognition.
There are trade-offs to all decisions the parties in this hobby make.
The collective practices reflect how we, ladies and gents, assess the risks on the whole.
Perhaps the practice will trend in the direction you hope they will (no portion of face, blurry or otherwise, in any image) - which I'm sure it WILL if more and more ladies run afoul of the law for showing even just their lips and chin, etc.
And if so, guys will adjust to the new reality (even as they secretely long for the view that even a naqab would allow lol!).

T.O. keeping your appointments and avoiding no-call no-show situations would go a longer way to furthering your marketing plans. . . followed by presentation, attitude, hospitality and performance, of course.