That is a very interesting question. First, I feel I have to (lots of times want to) read what's new and hot. Then I started thinking about my book that's coming out in spring '09, and where it would be in spring '10 or '20. I would like to think someone would still pick it up and read it several years after the publication.
With that idea circulating in my head, I went to the library and picked up three books that I had never heard of by first time authors who debuted in 2004, 2007 and early 2008.
I'm planning a read-fest this weekend and maybe even a note to the authors. You can never deny karma or at least you shouldn't