Web 2.0 website having huge traffics . So these Sites will be best place for your unique Article (written more than 500 words) that contains internal links for relevant articles of your blog to get backlinks and visitors also.
In short, Write an article (min. 500 word). that should be unique articles and never published in any other sites otherwise they will delete your articles. Take care of keyword density. Keyword desity must be upper then 1 to 3 percent. You can select appropriate image for that article. That’s it. Now submit it to Web 2.0 and see Boom.