The latest alertbox, [: Information
Foraging: Why Google Makes People Leave Your Site Faster](//www.useit.com/alertbox/20030630.html), claims
that “Information foraging is the most important concept to emerge
from Human-Computer Interaction research since 1993.”
And correctly, in my opinion, states that “…it’s healthy to remember
that users are selfish, lazy, and ruthless in applying their
cost-benefit analyses.”