Based on the following two behaviors from the tech giants:
Facebook interprets pictures and inserts the interpretation into its public pages HTML code Googlebot indexes these interpretation phrases
– you can reveal lists of members’ names and profiles based on Google’s image search.
The two Facebook phrases most common for tagging photos are:
“Image may contain… “, for example, “image may contain 7 people.” “Text that says,” for example, “text that says right to left.”
As an end-user, you cannot see the phrases on the pages, but they appear in Google’s indexing. (I will skip discussing