Social overload begets more social overload. In a room where everyone is shouting to be heard, the mob shouts even louder.
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Sharepocalypse Now: Why Social Media Overload Means New Opportunities for Startups
The biggest mission for all sites is to become a focussed place that (bravely/boldy) makes decisions on your behalf. Haven’t found many sites which show restraint and offer tip-of-the-iceberg insight, rather than overloading you.