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When we first reviewed Mufin, a music recommendation service that is entirely based around algorithms that can automatically detect the similarities between different songs, we only gave it a pretty

In a brilliant move that's sure to make both newspapers and social networks around the web jealous, the New York Times and LinkedIn, the leading US social network for professionals,

With all the discussions about information overload and the need for filtering, it looks like we're going to finally start getting some relief. This month, two companies made announcements about

Between the iTunes Genius Sidebar, Amazon's recommender system and Pandora's virtual DJ, recommender systems are now getting close to knowing my tastes better than I do. There's a certain seductive

Zync, a Massachusetts-based startup, operates a local event recommendation engine based around the city of Boston. The site currently lists 30,000 events across 20,000 venues. And even though it only

Loomia is a content recommendations service, used on sites such as the Wall Street Journal and PC World. We've profiled Loomia's Facebook app before, which tracks what you and your

Recommendation service Strands.com launched a lifestreaming service this week that aims to pull together the company's wide range of services in particular media and online activity into one central place

Google Reader offers a nifty mobile interface, and apps like Byline (iTunes link) and NetNewsWire (iTunes link) are well-designed native apps that allow iPhone users to keep up with their

Looking for new iPhone apps? With a marketplace filled with over 65,000 applications (give or take), finding the best ones via iTunes has become an exercise in futility. With the

Earlier this week we posted a Guide to Recommender Systems, as part of our series on recommendation technologies. In this post we look at some of the challenges in building