Forum Moderators: martinibuster
1. Obviously the most appropriate page has value to the person clicking in.
2. PageRank distribution spreads better -- your deep pages are usually the meat pages (Brett's money-makers) where the mainpage is more for show. Thus deep pages are the ones you want ranked in SERPs.
3. One extra link on the mainpage doesn't help alot. One extra link on a topic focus page can be the difference between this page being ranked #1 and ranked #31.