Gena’s Genealogy: Plagiarism in the Genealogy Community is an interesting article, well written on the subject. Very general however, but she does say she’s not pointing fingers . . .
I like Gena’s article because it addresses some concerns of mine. I wrote some articles along the lines of others that I have seen on-line, but like you say, there is the issue of *idea* plagiarism. Ideas cannot be copyrighted so the source of your quote above is a bit iffy. There is, though the issue of proper credit for the main idea of an article being similar like what I’m about to do with this one, link to it. 🙂