I would say Digg. There are a lot of spam messages on Twitter...
I don't believe twitter has a future...on the other hand I've seen numerous websites recieve a tremendous influx of traffic by getting listed on Digg! Take the experience project for example- they recieved their first 1000 odd members through digg and look at where they are now!
Anyway think about it...in tomorrow's world who will have the time to randomly keep posting updates to his/her twitter account?
Current Status is Digg is more powerful than twitter...
Thx for voting
In my opinion I get more traffic and useful hits from twitter
i like twitter and Digg,getting top page in Digg is so hard and twitter is good traffic source
Both are Good traffic resources
The only thing which I don't like about twitter is the lack of messaging words. I prefer Digg - The Latest News Headlines, Videos and Images as it has quality articles.