Do you guys know of any good (free) tools, prefferably one that can be downloaded (offline version), which you can use to compare 2 articles? For example, say I write an article, then I want to also place it on a different part of my site (or even a whole different domain), but want to avoid google duplicate content penalty, so I completely re-write it / re-word it. Is there a tool that I could use to compare the 2 articles, to check how good I have re-written / re-worded them????? I know they have some tools that you can buy that will do this, but do they have any good free ones? I have heard of copyscape, but I don't think it does what I want it to (compare 2 articles side by side and see how different they are form one-another).