[Google] - Google today announced “an initiative to help bring more magazine archives and current magazines online,” in partnerships with publishers to digitize millions of articles from titles as diverse as New York Magazine, Popular Mechanics, and Ebony.

More info from a company blog post:

You can search for magazines through Google Book Search. Try queries like [obama keynote convention], [hollywood brat pack] or [world's most challenging crossword] and you’ll find magazine articles alongside books results. Magazine articles are tagged with the keyword “Magazine” on the search snippet.

Over time, as we scan more articles, you’ll see more and more magazines appear in Google Book Search results. Eventually, we’ll also begin blending magazine results into our main Google.com search results, so you may begin finding magazines you didn’t even know you were looking for. For now you can restrict your search to magazines we’ve scanned by trying an advanced search.