As professional aggregators/filters, we're both friendly to and suspicious of services that claim to be able to sort through tons of media options and find stuff we'll like.
We like the idea, because finding good/interesting/important stuff is a big part of our job, and it'd be great to find services that make it easier. Of course that also means we may find ourselves out of work one day -- if these things ever work.
But plenty of people are trying to make it work. The latest is The Filter, from Exabre, a British company backed by Peter Gabriel and $8 million in funding; it wants to sort not just music but movies, videos, TV, etc. As best we can tell, The Filter lies somewhere between Pandora, which recommends music without regard to context or labels but based on the music's "DNA", and services like Last.fm and Amazon.com's engine, which tells you that people who like x also like y. Proposed business model? A mix of ad-supported portal (one day) along with potential referral fees for the likes of Amazon and iTunes, as well as some licensing fees for other media companies.