how can website owners get benefit from digg.com to drive traffic to their website.?
Digg is a real powerhouse of traffic generation if used correctly. You should identify a keyphrase which you have a reasonable chance of ranking for and try to work that into the title of your Digg post. Ideally your digg post will link back to a blog post with the same target phrase contained within the title. Doing this alone will give you a great chance of ranking for the phrase. There is much more you can do too.

Digg is a real powerhouse of traffic generation if used correctly. You should identify a keyphrase which you have a reasonable chance of ranking for and try to work that into the title of your Digg post. Ideally your digg post will link back to a blog post with the same target phrase contained within the title. Doing this alone will give you a great chance of ranking for the phrase. There is much more you can do too.
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