YouTube today announced a new commenting system that will be powered by Google+. The system, which is launching on channel discussion tabs this week before rolling out to all videos over the next few weeks and months, will automatically rank comments and feature threaded and private conversations.

Right now, YouTube comments are a hotbed for spam and idiocy, something Google is painfully aware of. The new system aims to fix this by personalizing and ranking comments for each individual user.

Last year, YouTube started asking its users to connect their YouTube and Google+ accounts so more users would use their real names on the site. Today’s integration goes quite a bit deeper. The new system will switch away from the current, recency-based system and instead rank comments according to a wide range of factors.


As Nundu Janakiram, a YouTube product manager who worked on this project, told me earlier this…

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