OK, I'm a masochist so I took a look at the #Grokipedia article about Klezmer (as I mostly wrote the Wikipedia one I was curious about reports of plagiarism).
It's not closely plagiarized from Wikipedia as far as I can tell, although it borrowed some of the structure of "my" article. For the rest it was put through a blender and cites random websites it could find without much careful attention. Meaning that there is some correct info and also plenty of the nonsense that circulates online. 馃