I was a Posterous user. I didn't rely on the platform for anything. It was just yet another endpoint in my world of content production. So I was not that upset when they announced they were shutting down (I would link to the post, but it's gone). But I was just checking the blog feed of an API that I monitor. It came up in my alert dashboard as a feed that wasn't pulling. I clicked on the link to test, and:
Just a reminder that in ALL platforms, data portability needs to be default. Either an API or at least an archive download as HTML, JSON, CSV or other common, open format. Pretty simple stuff that users need to always look for when signing up for a new platform.