Digg, as some of you may be aware of is a type of social media site where interesting stories/pictures/videos are submitted too this site digg.com and these stories are subsequently "dugg" up (voted up), or buried (voted down). This then informally separates what users believe to be the best/ most popular stories that end up on "the front page"; it allows users of the site to dictate what they think are the most interesting stories to share with other users.
Digg Dialogg on the other hand employs this "digging" tactic to converstations with famous people. The community is alerted that some form of celebrity will be interviewed in the coming weeks, questions are submitted and then users can "digg" the questions they think would be most interesting to ask the celebrity..
Recently Kevin Rose, founder of digg.com interviewed Trent Reznor of Nine Inch Nails using the most popular questions submitted and "dugg" by users of the site. The result was a very interesting, in depth 40 minute interview with Reznor, the questions are very enthrawling and you one can tell there was a lot of effort put into the content of the questions, bringing a more interesting facet to the art of interviewing, as all of the questions are submitted by different people and semi-democratically voted on.
The interview can be found here, if you have time to kill, it is a very interesting interview.