Digg, one of the internet’s famous social news site creates a new algorithm to track down people who used to play on their system. Mr. Kevin Rose, the founder of Digg said on their blog, they are goin to punish the accounts of the groups of people who vote just a certain group of stories to reach the homepage of their site. For sure these people are practicing blackhat seo. There’s nothing to worry if you are a good Digg user. Personally I used Digg if I want promote something.. I love this site. It gives me traffic, Has a high Google Pagerank and not using rel=nofollow, so my submitted post from Digg always got a backlink from their site. And heres what I discover from using Digg. I found out my permalink urls from the site of Digg from my submitted stories always hit the first page of Google and Yahoo ,then my original source post from my blog hits the 2nd page of SEs. This trick gives me a lot of traffic, specially if my blog post is a hot topic from the internet.