"Push for Pinterest" gives you some nice alliteration, and I think it works well metaphorically - pins ("push-pins") are pushed into walls, and (more abstractly) the pictures are pushed to Pinterest's servers. I don't use Pinterest, so forgive me if this steps on their toes too.
(I'm a sucker for words ending in -ush. "Rush", "lush", "hush", "mush", "gush", they're all so evocative.)