Facebook is the most used and trusted social networking site but as far as my concern Facebook is not at all safe because we won't know who visits or profile and any body visiting our profile can view and save our photos and posts without our permission. This can cause misuse of our photos and can diary or life.
In certain cases when we post our creative stuffs like our poems or our stories, our profile visitors can easyly copy it and can publish it in their name. So I don't think that Facebook is a good social networking site