Read/Write web came out with a story today that try to show that Yahoo Buzz got bigger than Digg.
The data that the article is based on is new Comscore data that shows that Yahoo Buzz did passed Digg in the number of uniques.

If you consider just the traffic numbers, indeed it seems that Digg are in big troubles. But a quick look at Yahoo Buzz and Digg home pages will show you a very different picture.

On the Yahoo Buzz home page, the most voted story has 118 votes. Most other stories has less than 30. At the same time, Just by taking a quick look you can see that most stories on Digg home page have more than 300 diggs (votes).
It even get worse for Yahoo Buzz if you go to the tech section where most stories have just about 2 - 30 votes. Even if you look at all stories from the last 24 hours and not just recent hours, the picture stays the same.

So yes, Yahoo Buzz is leveraging the Yahoo home page to build a big reach. But sometimes it’s not about quantity - it’s about quality. Digg users are much more loyal to the Digg brand. Their engagement in the site is much higher. Yahoo Buzz users are more likly to skip to the next hot site, as they are less emotionally invested than the Digg users. There is much more chance that they will stay loyal to the site on the long run. I will even argue that their value to advertisers can be higher (put demographics aside as I don’t know Digg data) as their digital participation is higher.

This is a great example why by looking just on page views and uniques we can get a very disturbed picture of reality. This is exactly why attention and engagement metrics are so important to the future of the web.