The writing should include an extensible explanation of the topic it describes. Articles made of couple of small paragraphs are considered as a tip. Article very closely resembles one published earlier. There is no reason to include same article twice and confuse users. Many articles on marketing topic are rejected because they usually talk about the same thing using different words.
Article is off-topic.
My site publishes new articles very often. Yes, there are. A number of frequently updated sites currently use our custom submission options. That usually means that we make a special html file for you to store on your hard drive you can bulk-submit several articles at once from. Send us a link.