Words have the uncanny ability to create magic. Often a group of words is rewritten to achieve various purposes. Either if you are a student, blogger, author or writing in any capacity; you need to play with your words to create magic for the reader. Rewriting is a very useful tool for a lot of people. The best way to rewrite something is to do it yourself and with your own knowledge. Often this is restricted by lack of time and vocabulary. It takes up to hours, days or even weeks to rewrite something depending upon the length of it. No matter how good you are in the language, there comes a point where your knowledge starts to drain out.
If you have not used a spinner before then I would suggest that you first use something that require more human imput like The Best Spinner or Spinner Chief in order to understand the basic principles. However if you must go fully auto then I would suggest you go for Wicked Article Creator. I have it and understand it is similar to wordAI but a one off fee of $47.
For a blogger who has to publish multiple blogs on daily basis, it is tough for them to write unique content, especially when writing on same topics. In that case, spin bot tool could be used to avoid self-plagiarism and to maintain the quality on blog posts. As spinbot change synonym automatically but you can pick the most relevant synonym using out tool.