Barnes & Noble
Borders
Amazon
MTV
BiggerBooks.com
Powell's Books

Or step outside once in a while and pick up a copy at:

Copperfield's Books, Sebastopol, CA
Rakestraw Books, Danville, CA
Alexander Book Company - San Francisco, CA
Books Inc. - San Francisco, CA
Haight Booksmith Inc. - San Francisco, CA

McNally Robinson Booksellers - New York, NY

Book People - Austin, TX
Texas Star Trading Co - Abilene, TX

Book Loft - Columbus, OH
Joseph-Beth Booksellers - Cincinnati, OH

Powells Books Inc - Portland, OR

Tattered Cover - Denver, CO

Mayuba Bookstores - Chicago, IL

Barnes & Noble (some stores)