Other article spinners also require that you enter your own custom synonyms manually or individually approve lists of potential synonyms as they are presented to you. This is another way of expecting you to do most of thinking, as opposed to expecting the software to be smart enough to instantly make judgment calls for you. Thus, one of Spinbot's main goals is to make the article spinning process as quick and painless as possible.
So it is pretty hard actually to achieve unique and human readable article, but with little twists it can be done. I needed my wordai account just for FCS Networker, but I figured out that Spin Rewriter will fit perfectly for me because of their affordable price. If you need article spinner just for seo purposes, avoid them. If you want to create amazing articles, yes they are very good ..but pricey as ****…
You have seen this type of article before - e.g. "10 Tips To Lose Weight" The key factor about this type of article is that each tip (each paragraph) makes sense in its own right - independently of the rest of the article. So if you can get a bunch of these paragraphs together, then you can mix any number of paragraphs in order to make your new article. The SpinnerChief TIPS plugin will do this task effortlessly for you. Check the details by clicking here
Imo it is not possible for google to detect properly spun content, it is not worth computing power it requires. They can do this using ngrams for example, but it is uses a lot of queries. And for example article spinner I coded beats this algo, so google cant detect that the content is spun. Manual spinning is also good but it takes more than 30 minutes per article.