I just got this in an e-mail. ebooks.com has 20% off on selected titles. They're discounting books by
Kerry Greenwood and Kurt Vonnegut. In addition, there was a coupon code for 20% off books from the following categories:
Family and Relationships
Social Science
Foreign Language Study
Mathematics
Romance
The coupon code for these is
Categorysalecp. It does warn that some publishers do not allow discounting of their books, but doesn't say which publishers so I guess it will be a bit hit or miss using the coupon code. Hope it helps some people though.