I think maybe you’re looking for article spinners…
Here’s an article on hubpages about them. They essentially allow you to create multiple copies of one article, replacing words here and there, so that each is unique. It takes a bit more time to write the original articles themselves, but people have had success with this method.
You can use another software called copyscape to see if your articles are unique online.
I would always, always, always recommend taking that additional time to ensure that your articles are unique. If you submit 1 (unique) article to 100 article submission sites, then you could recieve maybe 10-12 backlinks, but then google will work out that they are all the same article and discount the majority of those links.
If you ‘spin’ those articles, so you then have maybe 30 unique variations, you send them to 30 submission sites and your hit rate will be a lot higher because Google will rightly view each article as being uniquely situated on that site.
30 new shiny links for only a wee bit more work at the beginning…! :tongue: