Spinbot is designed to take you're high quality articles or any textual content and turn it into completely new content. And all this for free. Any written content that can be copied digitally, pasted, and then copied back out of webpage can be used via Spinbot.
The main challenge with any automatic content rewriter is creating additional content that is actually valuable, or readable, to the average internet reader. This is exactly where Spinbot shines. Spinbot doesn't blindly rewrite words or phrases -- it makes calculated decisions that according to the likely meanings and inflections of words, or groupings of words.
It is also worth mentioning that, due to the unique nature of Spinbot's rewriting capabilities, it is entirely valid to use content produced by other articles spinners to create additional content that these other spinners would not have thought to create. Of course, the caveat here is that the content you're processing through Spinbot must start out legitimate and readable.
I have read multiple other spinners advertise something like "100 unique readable articles from a single article." If it is true the case that any rewriter created 100 valid, readable articles, then Spinbot can easily turn that set of 100 articles into 200, because it is using a totally different kind of decision making.
Looking for an effective, free article spinner? Look no further than Spinbot.com.