Siftd is a digg clone that tries to solve some of the problems digg has been having of late. The concept is simple. Users submit stories to siftd, if other users like the stories they can digg them (or in this case “vote” them) up. When the story has enough “votes” it is featured on the homepage and receives more exposure. That is the concept but the computer algorithm that works out which stories deserve to be bumped up to the homepage is a lot more complex than that.

So what’s different about siftd?
The main difference with siftd is the algorithm. Currently the algorithm gives equal weight to stories in specific categories meaning it takes a story from each section and promotes it to the front page based on its popularity from the upcoming section. The algorithm also keeps too many stories from a single section from making it to the front page. In theory you should get a more diverse range of stories being promoted.

I asked Brian Rubash, one of the site owners how he came up with the idea.

We have been (and still are) long time users and fans of digg.com and have watched it’s transition from a tech news site to a more diverse site. By late last year it was increasingly evident that digg wasn’t going to return to what it used to be so we set about to create something that could provide a similar experience to the tech crowd, and other demographics, without compromising any group’s experience. We also looked at sites beyond Digg for features that impressed us, and features that made everything easier for the user. We have been called a Digg clone, but I think we really offer something more, and that really goes back to our goal of working for our users.

Siftd isn’t the first to follow digg’s voting model of making stories more popular (see mixx and reddit) but the system they have is solid. It’s going to be very interesting to see if they can get any traction at all and start stealing users away from digg but I personally think they may have shot themselves in the foot a little bit by branding themselves so similarly to digg. Usually (in my experience) to make any impact on a market that is already being dominated by some big players you need to offer something drastically new to get any attention at all.