Look out Digg
Uh oh. If the figures published by Techcrunch are correct, then Digg has a lot more serious competitor than Reddit. It turns out that a Digg-style feature called Yahoo Buzz sends more than 20 times the traffic than a Digg-linked story.
The problem is, there isn’t a small website out there that could handle that kind of traffic — I wonder if that can be a negative for Yahoo because it limits its news sources. The one time this website made it to the front page of Digg (it has since been banned for some reason, or at least it was last time I checked), I got 40,000 visitors. My servers could barely stand it. Bloggasm would be toast under the weight of a million hits.

I am getting tired of too many social networks.
I use DIGG extensively and there is a nice community going around my blog on DIGG, with people commenting and relying on it to get a heads up on their blog.
I am very happy with it and it works pretty well.
Reddit, on the other hand, simply downmods everything that has the word “blog” in it anywhere - totally useless to a blogger like me.