I don't see an existing thread on this, and more and more I've come to appreciate photography-centric sites. Of course there's the big names like MetArt, and there's ALS and FTV (although I always gravitated towards the videos at those two). I've found some gems at ATK. Over the past few months, I joined and am really liking Zishy and This Year's Model. The recent 'Vogue V' set at This Year's...wow, and Courteney Hamm at the gallery at Zishy, among others.

Would to explore other recommendations.