Copyright issues crop up regularly on the forum, and we try to deal with them whenever we see them.
Firstly, links to sites where people can download copies of copyright texts will be deleted, as will posts that imply that people are willing to exchange such files.
When external sources are used, please give references and links, and just quote the relevant part, which is fair use- reproducing whole texts is republication and may well constitute copyright abuse.
Copyright laws may not be strongly enforced in many countries, but they are in the UK where the site is based and we are subject to those laws. Any breaches of them could endanger the site and go against the spirit of what we are trying to do.
The basic principles are simple: if you use someone else's words or ideas, credit them and do not reproduce more than necessary to make a point- give a link or reference that people can follow up. If you didn't say it or think it, then it is simply common courtesy to acknowledge that.