Article Spinning
There tends to be a divided camp when it comes to article spinning. On the one hand you have those that believe the only way to create another article from the original one is to rewrite it completely, and the other group have no problem with respinning an article using an article spinner.
Article spinners work on the basis of replacing words in the article with similar but different words. Automatic spinners are available where you paste your article into them and they will automatically produce 100′s of articles from the original one.
I have found the 100% automatic article spinners to be unreliable. Most will create articles for you, but you will find that the articles do not make sense when you read them.
There are article spinners that do allow you complete controll over what words or even sentences are replaced with similar words or sentences. these are a much more reliable way to spin an article.
If you are using article spinners, to create a fully respun article that you can post on to an article site as a completely different article to the original one you would have to get above a 40% rewrite.
This means that 40% of the article has been altered. To achieve this you are going to need to change the title and possibly some of the keywords as well.
Article spinning does allow you to create 50 articles very quickly and if you are just looking to get as many people as possible to read your article then that is fine, but if you are looking to use articles as a way to help your seo then you need to be rewriting the articles yourself.
You can use a combination of both methods by using an article spinner to create articles that you then submit to hundreds of lower ranked article sites using a automatic article submitter, and for the higher ranked article sites such as ezine articles and Go articles, you can rewrite the articles yourself.
As I have stated before article marketing is a numbers game, but on the other hand 1 quality article that has hundreds of people reading it is much better than 10 articles that are read by only a couple of people.
There are no hard and fast rules and you do have to find what works best for you and for the niche you are involved with. If one method does not work then try another one. Internet marketing is all about trying different strategies until you find one that works for you.