1. You will have same story at many social bookmarking site, Search engine will assume it as copy content, and your link will loss at search engine.
2. You didn't built a community at each social bookmarking site, and it will dificult for your story go to front page, because of less votes. You just get minor traffic.
The better one is submit it manually and built community at that social bookmarking site. Provide vote and visit other one story, you will get vote also and visitor
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