This isn't about one of the 65+ ecomodding tips directly. I notice when viewing the page, the "topic" icons and some of the thread links don't work. I wasn't around for it, but I gather there was a forum software migration that changed all the paths from "forum.ecomodder.com/" to "ecomodder.com/forum".
The topic icons are coded as "http://forum.ecomodder.com/images/em-skin/statusicon/forum_new.gif" but changing the path to "http://ecomodder.com/forum/images/em-skin/statusicon/forum_new.gif" works. I think the same issue is at work in the 100+ hypermiling/ecodriving tips page.
Meddlesome software engineer signing off...