Most plagiarists don’t expect to get caught and, when they do, they generally go along with the demands to avoid escalation. Many will do so silently, never writing back and others will write back to apologize or make excuses. A few bold souls might even blame the infringement on a friend who gave them the work. If that happens to you, be sure to ask for the name and E-mail of the friend in question so you can contact them personally about the infringement and, if your plagiarist doesn’t provide that information, don’t buy the story, especially if they distinctly claimed the works to be their own. —Jonathan Bailey —Contacting a Plagiarist (Plagiarism Today)
I guess that since the “plagiarismtoday.com” domain was available, this author is stuck with the term “plagiarism.” But what he’s really talking about is copyright infringement. But the content on this site fills an interesting niche, in that it seems to focus on cases where one netizen pilfers the work of another. The issues I found discussed on this site involved self-published poetry and blog discussions, rather than professional content.
If I reproduce something that somebody else wrote, and I give the original author credit, it’s not plagiarism, even though it may still be copyright infringement.
It’s not plagiarism unless you pass off somebody else’s work (e.g. words, ideas, or complex structure) as your own.