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
Think of it this way: What do you have more chance of hitting, a distant, tiny target or the broad side of a barn? For the sake of search engine optimization, you want your website to be the broad side of barn. The more quality articles, or unique readable content, your website or blog offers to search engines (and therefore the general public) the more exposure your website will receive from major search engines.
There are lots of reviews about the product, and many people here are writers that experienced a wonderful time doing their job with the aid of the tool. Most of these people usually say that you don’t need to rely on the tool completely to get the job done because that will fail at most times. What you need to do according to the reviewers is that you should learn how to edit the article a bit so that it won’t look completely spun since there are some clients that hate this tool.