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Caching has been traditionally considered acceptible, legal, and ethical. Most web browsers do it on a small scale, and Google does it on a large scale. If the purpose of a scraper is to enable, for example, an "offline reader", there is no ethical dilemma.

Even long-term caches that are not shared with others are not an ethical dilemma so long as the material on the web site being cached remains publicly available. Beyond that point, there is a dilemma, and one has to consider whether the good of continued access to that data outweighs the good of complying with the copyright-holder's wishes. I'd take that on a case-by-case basis.

Larry Wall is Yoda: there is no try{} (ok, except in Perl6; way to ruin a joke, Larry! ;P)
The Code that can be seen is not the true Code
"In any sufficiently large group of people, most are idiots" - Kaa's Law

In reply to Re^3: [OT] Ethical and Legal Screen Scraping by radiantmatrix
in thread [OT] Ethical and Legal Screen Scraping by eyepopslikeamosquito

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