Since blogging alone is about as futile as pissing yourself inside a hazmat suit (it might feel nice at first, but no one will notice), here are some places that managed to force/silo everyone into their ecosystem at the peril of irrelevancy:

There is a snap.as account with some galleries that are fairly recent, and a much, much, older Flickr account with some stuff dating back to 2004 and the dot.com crashes and revivals.