So what photo sites to use. There are a lot of choices. I currently have some four photo sites in uses: Famous Flickr, 500px, Instagram and Facebook Page.
I keep gravitating to the Flickr site. It has a very active community and lots and lots, and I mean lots of pictures.
Then right after that you have the beautiful site of 500px. Also a lot of pictures. Not so many "family" pictures. Feels a bit more professional oriented.
And off course Instagram. Instagram has a vivid user group. And is an easy way to quickly post something from your mobile platform.
And off course good old Facebook. My least favourite platform.