Please don't delete other people's articles - just create a heading underneath their article, with the words "Another perspective" or similar, and add your views to the page. If there is a factual error in someone's article, please point it out in a polite and decorous fashion in the comments tab. You can add links to the relevant sections of the Links page (but I reserve the right to remove them).
Please sign all your articles, reference them (or indicate that it is your personal view) and add a biography page outlining where you're coming from. You may use a pseudonym.
See also Content guidelines