I have done some research on the matter of copying articles from the net. There is very little restriction on copying of articles under what is known as "Fair Use". If you are going to copy someone's Book, music, pictures, movies, you need to get permission from the owner.
Generally speaking permission is required when:
When you intend to use the materials for commercial
purposes.
When you want to use the materials repeatedly.
When you want to use a work in its entirety and it is
longer than 2,500 words.
Additional info may be gleaned from a few other sites:
http://www.ecommercetimes.com/rsstory/45032.html
http://biology.plosjournals.org/perlserv?request=get-document&doi=10.1371/journal.pbio.0020228
http://www.efuse.com/Plan/copyright2.html#whatisfairuse
http://www.ariadne.ac.uk/issue5/copyright/
http://www.web-miner.com/plagiarism
http://www.stu.ca/~hunt/4reasons.htm
http://www.sitepoint.com/article/interview-copyright-internet
http://www.apcug.net/help/communications/are_legal_and_ethical_questions.htm
Bottom line, do not sweat copying snippets of research for articles supporting your opinions here on PERB.
Generally speaking permission is required when:
When you intend to use the materials for commercial
purposes.
When you want to use the materials repeatedly.
When you want to use a work in its entirety and it is
longer than 2,500 words.
Additional info may be gleaned from a few other sites:
http://www.ecommercetimes.com/rsstory/45032.html
http://biology.plosjournals.org/perlserv?request=get-document&doi=10.1371/journal.pbio.0020228
http://www.efuse.com/Plan/copyright2.html#whatisfairuse
http://www.ariadne.ac.uk/issue5/copyright/
http://www.web-miner.com/plagiarism
http://www.stu.ca/~hunt/4reasons.htm
http://www.sitepoint.com/article/interview-copyright-internet
http://www.apcug.net/help/communications/are_legal_and_ethical_questions.htm
Bottom line, do not sweat copying snippets of research for articles supporting your opinions here on PERB.






