Taking 1 unique article and turning it into 1000's of semi-unique articles all in an attempt to build more backlinks from your content.
Collecting some of articles about same topic, then taking few of sentences from every one article and finally create a new article from these with same meaning. It's called Article Spinning.
It is the technique to make new article using existing article. There are lots of spinning software to spin article. But most important thing is spinned article is not good as human written article.
Spinning is the process in which a writer creates a new article out of an existing article by rewriting it.
Article spinning is all about creating duplicate articles from a single article as what we wish, it makes more easier to spin article with the help of software, but drawback @ article spinning- as it is semi-unique compared with existing article it won't make that much sense on relating meaning where keywords be spin., so better make unique articles