When I became Reiki, meaning I was attuned to Reiki and took all the classes, I was taught and teach even now that the Reiki symbols are sacred and therefore should not be shared with anyone that is not Reiki. They can't do anything with them anyway - only those who are connected to them in the Reiki attunements are able to access their power, but that is not the point.
Diane Stein in her book "Essential Reiki" was the first person to openly display them for all to see, angering and disgusting the Reiki world. Now you can find them openly on Google, also as GIF's and Meme's, and in many books on Reiki, as well as how to perform the attunements, something even more unethical and disrespectful than just making the symbols public.
In my opinion, this is nothing but blatant greed and self aggrandizement - profiting off of the sale of the sacred and secret knowledge of Reiki for noting but your gain. It has nothing to do with the "oh let's share everything with everybody for the good of planet" do gooder's. Yes we need to get the word out about Reiki to help everyone heal and the planet, but this has nothing to do with that - not at all - anything to make a buck - ANYTHING!
When did this attitude and behavior become the norm and acceptable conduct for anyone who claims to be a Reiki Practitioner? Just another sad state of affairs that we are finding ourselves in in many countries all across the globe, from stealing public lands and peoples savings, to slaughtering endangered species and posting pics of yourself on Facebook with their carcasses ANYTHING TO MAKE A BUCK. ANYTHING - nothing is sacred, nothing is respected, and to hell with ethics and morality.
Surely Dr. Usui is turning over in his grave.