I've had to look at a few options for improving performance on this site. I noticed that the introduction of the Feedburner module and moving the RSS feeds across to Feedburner had caused some performance issues.
As I write this, I'm making some changes to the site based on the Essential Steps to Speed up a Drupal Web Site series of articles.
The current change is to implement the Block Cache Module, so you may see a couple of pieces of content duplicated while I switch from dynamic to cached content.