I read several writing magazines, mostly in electronic form as the imported magazines available in Aussie new stands are very expensive. I've always been a subscriber of the two U.K. Magazines – Writer's Forum and Writing Magazine, but until now the editions went by without an easy method of referring back to articles.
Joanne Phillips is a British author, who also loves indexing. From her website, she's provided a PDF index of Writing Magazine, 2012 and 2011. Those direct links will open the PDFs for you. Also take time to check out Joanne's series on Self-Publishing, it's a major resource.