I have trouble with Digg. For one thing, if I go to the upcoming stories area, pretty much every story has 1-5 diggs. If I keep going forward, they seem to have 5 or fewer diggs! Where are the ones that are --just ALMOST there-- with maybe 15 or 25 diggs? Their scheme for promoting stories is very strange and tough to figure out. Then, some stories get to the homepage with fewer diggs--which I'm sure is relative to time--but it's just confusing.
Non-digg fans would not be willing to participate anyway. Everyone digging an article would have to be concentrated to a shorter period of time or they do nothing. It seems that if a story doesn't get to the homepage it essentially gets next to no traffic or ranking by users. The homepage is where its at.
Getting to the homepage would probably bring almost any web server down, too, so some preparation would probably need to be done. I'm sure it would have brought Gift Pathways down had I got to the homepage. I mean I'm running it on my residential one megabit up DSL connection! Most popular servers/farms have 20-100 megabit connections.