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.
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.