How does google plus photo search work?

Question

Google

I store my photos in google+, I thought about organizing some tags so that it would be convenient to find a series of photos with one tag, in the comments to the photo I put #document#, #rest#, #work#, #notes#. Some photos have several tags\comments, but here's the thing, when I enter #document#, to be past those photos that have comments, other photos and even resembling a document, for example, I took a picture of an A4 sheet on it some text and it got into this search results oo
So the question is: how to make tags or how to use the correct search in google plus for your photos?
ps How safe is it to store photos of "not modest" content marked "only for me"?

Answer 1

I advise you to store a personal photo archive only locally.
PS: ON THE INTERNET IT IS NOT SAFE TO STORE EVERYTHING AT ALL!

Answer 2

techcrunch.com/2013/06/12/how-googles-acquisition-...
This article will answer your question.
AI in action.
It is highly undesirable to store personal photos in g + :)