13 Jun 06
01 Jan 10 1:04 pm
As far as I know, Affilorama's tool is based on the number of words in sequences that are different (ie not a single word by itself but a grouping of 2 or more words). Perhaps Dupfree pro calculates it by the number of duplicate words used, but doesn't take into any account the sentence structure.
I'm not sure as I haven't used Dupfree pro, this is just pure speculation on my part. All I know is that our tool doesn't just count the number of occurrences of each 'word' in the article and compare that against the other article. It takes into account the context and placement of the words within each sentence.