Engaging your visitors is vital to maintaining a long term website traffic. Modern search engines such as Google will monitor your traffic to make sure that visitors they are sending from their search results are staying for a long enough length of time as well as visiting multiple pages. Both of these metrics make a big difference as Google decides how to rank your site content. So, in other words, the visitor behavior the search engine observes will influence future rankings for your site, and the quality and quantity of your content will dictate visitor behavior.
It is also very helpful for people who struggle with the English language in general and writing in particular. A free article spinner or paraphrase tool makes it easier for them to get new content with minimal effort. The quality of content created with article rewriter is close to human written content if not equally good. To ensure the quality, you can edit content to fix any errors.
You can still find some grammar mistakes in the paraphrased article, but its only minimal and the resulting article is still highly readable and the uniqueness is relatively high, though I was not able to check the article rephrase in a plagiarism checker like Copyscape, although based from the result, I believe it can be used perfectly for tier 2 and tier 3 link building campaigns
To rank your website in search engines you have to post content at your website on daily basis. If you have more than 2 websites then it is almost impossible to write unique content on all those websites. To do this task webmasters use article spinning tools so that they can post articles to their domains daily. Paraphrasing Tool is also used by students when they have less time to submit their assignment; they just copy content from the internet, rewrite it, remove grammar mistakes and submit it.