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.

Select the best quality text/content from online, check it, is it suited with your context? Proper selection is too much important for delivering better new one. Get the content from there! And place it on the editor of SEO WAGON Article rewriter tool. Hey, click on Next and see the effects, the engine will read it and gives you options to rewrite as per your choice, choose appropriate synonyms, or you write your own word. There are thousands of synonyms of each word in our dictionary, let’s go for the quickest way of generating article.
A few years ago we were wondering - is there a good paraphrasing website with an automatic paraphrasing tool online? We searched the Internet for a good sentence rephraser, and altought we found many, none of it could rephrase paragraphs correctly. Decision was made - create the best English paraphrasing tool to rewrite my or your text. Only our "paraphrase maker" has a built-in reword generator which will help rephrase any text automatically and accordingly. Paraphrase Online is free tool that can be used for automatic text processing: our paraphrasing tool (or article rewriter, article spinner, text rewriter etc.) is an online tool that automaticaly rewrites any provided content into an unique one by changing and mixing specific words and phrases with suitable synonyms. Our article rewriter is an advanced automated paraphrasing tool that allows instant online paraphrasing of any article into a unique content. Rewriting of content can help you greatly in avoiding the penalties you may suffer due to plagiarism. This free paraphrase tool does not require any registration or sign up, all you need is to enter any human readable written content, and you will get human readable rewritten content in the results. The primary goal of this software is to help compose fresh content completely for free and in no time. Mastering an online article rewriter tool can prove quite tricky. When paraphrasing or rewriting any text or paragraph, many writers and students tend to get hold of the technology that enables them to rewriter any written piece of content into a fresh piece, yet keeping the original meaning of the text same. This approach is usually used to simplify a piece of writing, minimize the use of quotes or target an alternative audience. When article spinner tool is used correctly, paraphrasing turns out to be much more concise than the original text, covering all the main points while preventing the risk of plagiarism. Whether you are a student or writer, you can use this free article rewriter online to rewrite any text to save time and get a different version. If your life revolves around writing, perhaps this is what you do for a living then this free article spinner tool is the answer to all your problems. It is the best academic and most SEO friendly paraphrasing tool that enables you to get a rewritten article with great flexibility. This competent instant article spinner helps you make a better attractive and comprehensive article in seconds. You can use tool to get rid of plagiarism or speed up your SEO performance. This is the definitive and complete rephrasing tool for rewrite and reword any of your sentences!
If you already have some blog or website content that you want to turn into fresh, rewritten content in a matter of seconds you should use our article rewriter tool. This free paraphrasing tool is available to you 24/7 to rewrite the text. Most of the text created by our article spinner is human readable and 100% unique which makes it suitable for creating mass blog posts and web content.
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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.

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

3. The underlying ENL Semantic Spinning technology is now able to change the grammatical tense of specific sentence parts (for example, where it does not hurt to replace present tense with future tense). 5. Relevant stock photo integration Spin Rewriter 9 have further improved integration with free stock photo repositories so you can easily add super relevant photos to your freshly spun contents. 6. Built-in video database With the release of Spin Rewriter 9, they have made the database of video clips even more powerful & more versatile. These have both Video and Photo Database have been improved significantly, so you can enrich your articles in even more powerful ways. 7. New video tutorials: Spin Rewriter 9 have added new video tutorials that will turn you into a power user. Your spin-fu will be a thing to behold. And they have streamlined elements of the user interface to make you feel even more at home. 8. Categorization of articles You no longer need to assign categories to individual articles. With just a click you can now instantly categorize a selection of your contents. 9. Mass export from Archive You can also export the spintax of multiple spun contents straight from your Archive. 10. A significantly improved User Experience The SR dev. team have invested hundreds of hours into UX analysis & they have had 43 people record screencasts of how they use Spin Rewriter. This enabled them to pinpoint confusing elements of the user interface. It also revealed various workflows people are using inside Spin Rewriter to generate their article. The improved interface is MUCH more intuitive, much simpler to use, and a lot faster, to boot. 11. Improved On-Boarding and Tutorials
Would you ask somebody who does not talk great English and has no capabilities or experience to revamp site content? No? All things considered, this is precisely what many individuals do when they go to some modest administrations or specifically procure the least expensive specialists that they can discover, The final product is regularly add up to refuse that has unmistakably been composed by somebody that does not see either the subject or the dialect. Far more detestable it will regularly fall flat a literary theft checker which will cause you real issues with the web search tools.

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.
So you are still doing it? I have stopped using spin content after panda update way couple of years ago. As content become king and the user expereince the key to earn website authority, I started focusing on writing more meaningful and engaging content. I never cam across any spinner that time which makes total sense after spinning. The spin content either looked very bad or it needed manual review. I forgot the name of the spinner tool as well. Looking forward for replied from more experts here as it could be an eye opener for me if spinning still works.