At a glance, Loud3r appears to be yet another version of popURLs or Alltop, just with a lot more verticals right off the bat. Dig a little deeper (you don't have to dig very far) and you'll see that one major differentiating factor for loud3r is that it's also a social network.
You can create a user profile, and it will universally give you access to your profiles on lound3r's family of sites. However, this isn't the only thing that makes loud3r different from the rest. Lowell Goss, loud3r's founder and CEO of loud3r, was also quick to point out that loud3r does not have the exact same target demographic as popURLs and Alltop. [img src="http://sale-online.click/wp-content/uploads/2008/06/buzz3r.gif" caption="" credit="" alt=""] With mainstream users in mind, popURLS and Alltop take the simplified and heavily curated approach to presenting an aggregated site of news feeds.
loud3r, on the other hand, has an involved algorithm for determining the best content from across the Web, depending on your particular interest. There are three main categories that loud3r looks at: the quality of an item, its topic relevancy (based on its current page, media inclusion, and editor and user ranking), and its freshness (is it new?).
There's also a Most Popular tab for sites in loud3r's network, but it's the Most Interesting tab loud3r is most concerned with. It allows for sites in loud3r's network to better appeal to its niche audiences. Goss gave the following example, saying that loud3r "varies by topic. If you were to compare us to someone like Digg, a story about Apple is ranked the same way as a story about everything else. We rank according to these topics." Returning to the user profile aspect of the loud3r network; there's not yet a large amount of interaction, but your reading history will also be made available on your profile.