I had no idea there even WAS something called Flickr Explore, never mind how photos were selected for it, until I saw Rotanimod's thread recently. I've been using Flickr for quite some time, sporadically, and for about a year fairly extensively. To my knowledge, none of my photos have ever made it to Explore. I don't know, and I don't care.
I post them to Flickr so that family and friends can view more of them than what I post on FB or my blog. If the "public" sees and appreciates them, that's certainly a bonus, and I'd definitely consider it a compliment--but it's kinda like being ranked #23 in the BCS rankings--might be kinda cool, but in the end it just doesn't do a thing for you.
Now, 500px is a whole different story. I only use it for what I consider my better photos, and when a recent upload starts getting a lot of likes, I start obsessing about whether it will make it into "Upcoming" and then into "Popular." I've had several make it to "Upcoming," but I think only two have made it into "Popular."
Again, really, it just doesn't matter, and I don't know why I care. I guess it's the fact that you can "see" the progress the photo is making, as it's "score" slowly creeps up towards something high enough to move it to the Popular category.
Either one--500px "Popular" category or Flickr Explore--ultimately just kinda stroke the ego, I guess. Nothing wrong with that, once in a while. Keeps me thinking maybe I should hang with this photography thing a while longer.
