I use Dropbox as a backing store for photo sites, due to the simplicity with which I can add photos from any device.
All my sites are packaged as Docker containers, to simplify deployment and local development.
I use IFTTT to pipe posts from Instagram, Google+, and Medium to my WordPress blog.
My blog runs on WordPress, but these days I mostly use it as an automatic aggregation from other networks. My writing—for obvious reasons—is all on Medium.