This may be a bit off topic, but it is related to content. Many SEO experts say that you should also post your best content also in free websites, like Blogger, Squidoo and Weebly. There is one thing about this that has often confused me. First of all, all of the content on my websites it original. It is my content, and no one else's. At one time, I was doing this, and my Alexa rankings were up. Since I stopped doing this, they have gone down.
However, if I post some of my articles to the above free websites, to get more backlinks, would this come under the category of duplicate content, even though it is my own original stuff? Another question is, if I do this, should I spin the articles? If someone can help me with this, i would appreciate it very much.