I'll admit it, I use youtube for edits. I'm trying to not clog up my vimeo so I can put more "serious" videos on it down the road. That may be something to consider, whether you'll be doing more in depth stuff later on. It's a preference thing though.
For photos, 500px. It's just so much more elegant than Flickr IMO.
For me, fuck style. i'm just trying not to land upside down. -SKIU4EA