Aggregator Feed Reader LinkedIn Netvibes 
Techipedia: Tamar Weinberg
APRIL 10, 2008
Since FriendFeed aggregates numerous social networks, it can give you a lot more information about its users, especially with regards to how and when they engage with online content. By studying their feed, you can learn a lot more about how important social media is to them. FriendFeed isn’t just an aggregator, though.
Buzz Marketing for Technology
JUNE 27, 2008
I use netvibes personally. I still cant believe this functionality hasnt been integrated into (all) readers. You dont need to use a third-party online feed filtering service on the Mac. I recommend NetNewsWire, a free desktop feed reader that will filter all of your subscriptions simultaneously using "Smart Lists".
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