Kinda, but really the logo at the top left of a page (generally) is the branding of a site. Plus to an unsuspecting user, it seems like the site is endorsing Digg.

At first I didn't mind the digg bar, but since working on a project which sometimes comes across digg bar links...quite simply I !#?*ing hate it. They've broken how the web works, now I need to specially parse the page to find the real link. The least they could do is change it so it only shows the Digg bar to user-agents that are from a well known browser, else just redirect to the real URL.