I agree! Many of us, students and teachers, need non-public spaces where we can develop our ideas without necessarily deciding to publish them. Writing is thinking, so assuming a pause (one second or forever) between writing and sending is important.

Everything listed here is important. Are we skipping too quickly past what is commonly called media literacy? Does choosing appropriate images include these considerations--for example, who made the image, for what purpose, with which viewpoints included or excluded, etc.? http://www.medialit.org/reading-room/five-key-questions-form-foundation-media-inquiry