Hi,
When your buttons are injected onto a site many many times, it can drastically increase loading times for the site. One of the ways to get around this, whilst keeping the buttons, is to make them load after all the main content has loaded. There is a load of information on how to do this here:
http://www.w3-edge.com/weblog/2011/02/optimize-social-media-button-performance/
Would it be possible to add this as an option, or function to diggdigg?
Johnathon