I don't know quite what to make of 500px just yet. I have been on here a bit and am still trying to figure out what I want it to be for me. Do I want to post my best photos from Flickr? Or different, never-before-seen stuff? The level of photography on here seems a bit better than Flickr, but perhaps that is because it is a smaller community. At the same time, it does not seem as receptive to more experimental photography. And then personally, do I want my stream here to be the opposite of my Flickr stream, and be very consistent in its look? But I am not the type of photographer that only does one thing, I do lots of things. Yet that is what my Flickr stream is for, that jumping around and trying everything.
Ah well. These are not questions that worry me at all, and I am in no hurry to really figure them out. But I do like to consider them.
Enjoy the photo.