Obama goes on Tumblr. Somewhere Mother is smiling.

Her influenced has reached President Obama’s 2012 re-election campaign. His just-announced Tumblr site asks readers to submit their stories to help build the blog but cautions: “There will be trolls among you: this we know. We ask only that you remember that we’re people–fairly nice ones–and that your mother would want you to be polite.”

I’m sure the site has already been bookmarked by the GOP staffers tasked with monitoring and refuting talking points. The New York Times writes about the staffers today: “Barely a minute goes by between the time Mr. Obama — or a high-ranking member of his administration — makes a speech, holds a news conference or says something to a talk show host, and a team of young Republican House staffers, fueled by pizza and partisanship, punches back.”