Authors on People's Minds

On M. J. Rose's blog she has a list of the Most-Googled Authors over a three day period. These are not bestsellers, necessarily, nor classics, nor the most-circulated authors, nor the authors currently in most demand. They are just the authors people are hearing about. Whatever it may mean.
       Here are the top 10: David Sedaris - Chuck Palahniuk - Michael Chabon - Nick Hornby - John Irving - Dave Eggers - Haruki Murakami - Bret Easton Ellis - Arundhati Roy - David Foster Wallace. (The links take you into the catalog; results are sorted with the most recent on top.)
       The next ten are: Jonathan Safran Foer, Ian Mcewan, Jeffrey Eugenides, Zadie Smith, Douglas Coupland, Irvine Welsh, Jonathan Lethem, Neal Pollack, Orhan Pamuk, Amy Hempel. [Neal Pollack? The others we have in the catalog, but who is Neal Pollack? Guess we better go ask Google :-) ]
       Palahniuk, McEwan, and Hornby are on the New York Times Bestseller list, and on the Booksense (independent booksellers') list. Most of the others also have current books. Here's a fairly spooky array of covers... is it somehow indicative of what kind of authors get buzz on the web?