Stewart Rahr did something very nice for anyone affected by AIDS today. And something not as nice for anyone who was enjoying a world without self-serving Web chatter.

The billionaire saved the lives of a handful of “dead” celebrities, as Alicia Keys, Kim Kardashian and others agreed on December 1 to silence themselves on all social networks until $1 million was donated the Keep a Child Alive organization.

There was just one problem: nearly a week into this campaign, barely half that amount had been raised.

But Rahr stepped up this morning and gave $500,000 to the charity that focuses its

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