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At least one key Yahoo executive was unswayed by Friday's revival meeting featuring Steve Jobs: Stewart Butterfield, the founder and general manager of the Yahoo-acquired Flickr photo site. Butterfield, Valleywag has learned, plans to leave to, well, spend more time with his family. It's a pat phrase that always sounds risible, but in Butterfield's case, we'll make an exception: Anyone who has seen photos of Butterfield and his infant daughter Sonnet — on Flickr, naturally — can see his complete and utterly genuine devotion. Yahoo, too, might have a claim on Butterfield's devotion, in the midst of a precarious revamp. But Yahoo CEO Jerry Yang, while a big supporter of Flickr himself, is not nearly as cute. No word on whether Butterfield's wife, Caterina Fake, now a high-ranking Yahoo executive, plans any move, or who will replace Butterfield at Flickr. Update: In the comments, Butterfield says that after taking some time off in July, he's decided to take a longer paternity leave, but still plans to return to Yahoo. (Photo by mylesdgrant)