Andrew Chak's Submit Now: Designing Persuasive Web Sites
is filled with some great ideas.
Here's an interview ith the author:
I'd also look at some usability and information architecture sites such as
and this section of Boxes and Arrows:
Especially articles like the ones on "Lessons for Web Design from Mall and Retail Design "
Some excellent ideas on both sites. Organizing pages can be very beneficial to visitors, and search engines if done right.