“I Woke Up but My Server Wasn’t There”
Robb Shecter’s WordPress site got popular overnight thanks to Reddit and went down immediately. The interesting aspect is that the site was new and it’s on a relatively high-powered server. The author then found that the theme he used in particular was doing too many (47!) server requests at a time, and the site ran along very well after switching back to Twenty Eleven.
I think it’s an important read for any theme developers out there.