No, you should not. Submitting the same article to various submission sites can cause you to receive duplicate content penalties by the search engine. Nowadays search engines are very particular about any duplication. I suggest you following points to do before submitting that same article on submission sites: 1: Tweak a few words in between the paragraph to make it unique like active voice to passive or maybe use synonyms or variations on terms included etc. 2: Take care of the keywords density of your desired keywords for top ranking. 3: add or subtract lines in between. 4: Change the Title of the article every time. I hope these tricks will help!!