Ok, I signed up and dugg it, but it looks as if this site has a long way to go to top the sites on their home page. As of 5:00p eastern today, LiveATC had 24 and the top sites had somewhere around 300-500 diggs.
BTW, I used to be a champ at the video game Dig-Dug back in the early 80s. I can't help but think of that game when moving around that website.