There are people I know that read digg, but are not connected as my friend there. Do you not get the social part of the site? Digg's more useful if you have your friends actually marked as friends.
Or, maybe you just don't have an account on there at all. If so, then you also don't quite get digg. You're not contributing.
Get an account, add xt0ph3r as your friend and start digging. Let me know who you are on there.