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Divya – perhaps you should write an article like that yourself.
You’ve posted some links to other’s work on this subject, which is helpful. Thanks.
As with all web techniques, there’s things that can be improved and more to learn as our understanding grows. The entire scope of that work could not effectively be summed up in one article without leaving the reader bamboozled. The purpose of this article was to introduce the technique, and it does so very helpfully.