Social networks and blogs now reach 80% of online adults in the US and together account for nearly one-quarter (22.5%) of the time Americans spend online, according to a report from Nielsen.

That makes social media the top online category in the US, followed by online gaming (9.8%), email (7.6%), portals (4.5%), search (4.0%), and instant messaging (3.3%).

The "Other" online category, comprising 75 sub-categories—such as viewing adult content online, visiting retail websites, and reading about various subjects (e.g., sports and health) online—accounts for  35.1% of time spent online.

Below, additional findings from the State of the Media: The Social Media Report, Q3 2011, by Nielsen NM Incite.

Facebook Top Social Platform

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