>I hadn't checked it out recently, but it looks like they're still doing fine as far as having a ton of great photos posted. As long as the "community" aspects don't bug you, maybe it's a winning strategy?
It's fashionable to bash on flickr because it's "languished" and, one redesign aside, hasn't moved a whole lot in a long time. I've certainly taken casual swipes at them myself.
However, the truth is that--while I can imagine some features I'd like--it works pretty well and has a lot of great photography. At the end of the day, it's entirely possible that I wouldn't like it if they were constantly taking the site in new directions because social or mobile or big data or whatever the current hype is.