Today, Tumblr--home of gifs, memes, and NSFW photos--joins the ranks of corporate America: It's just been bought by Yahoo for $1.1 billion. Besides goofy cat videos and loads (seriously, loads) of porn, Tumblr also hosts one of the most passionate, creative, and irreverent fashion communities out there on the internets. So now the question is: How will that community, which so far has thrived on the free-for-all vibe that prevails at Tumblr, be affected by the new acquisition?