Dugg: Too Much of a Good Thing
I read a blog post recently by someone that got Dugg to Death after publishing a list of their 100 favourite Wordpress themes.
People who are using Digg and other similar services in an effort to drive traffic can either accept the risk of server overload, or they can prepare for it by appending a string from Coral to the URL that they are submitting for digging. This is a peer to peer type of thing that allows you to access cached content from wherever it might exist on the network.

