Not sure what I'm supposed to be seeing, because it doesn't work at all in Safari on my iPad running iOS 5.1.1, in either portrait or landscape orientation.
Maybe they simply don't consider it profitable enough?
Flickr's done a remarkably bad job with taking advantage of the exploding popularity of mobile photography. The iPhone is the most-used camera on Flickr, yet their iOS app is mediocre. Instagram ate their lunch and they don't even seem to care.
You've summed up the alternatives pretty well. I wanted to move from Flickr to 500px, but I feel like my Hipstamatic snapshots simply don't belong there, considering the caliber of talent on display there. I ended up settling for Instagram, even though I'm not too big on it.
Agreed. Sites like Tumblr and Twitter are mostly full of people reblogging and retweeting other people's posts, and the source posts are often things that have been posted before. Many Internet users have short memories, and even shorter attention spans.
The Internet is increasing full of people linking to content, instead of creating it, and there's a fine line between "curating" links and simply spamming them.