@Tipa @shalien @me You _can_ export your Mastodon posts into a ZIP file. It should at https://<your-instance>/settings/export. It exports into an ActivityPub format which could definitely be translated into other mediums.
My bigger issues is that you cannot transfer your posts between Mastodon instances. If I had to shut down my instance, all of my user’s posts would die along with it. They could export their data, but they would have to set up their own blog, import data, etc… They could also throw it on The Internet Archive, but that’s not a good solution either.
What I would like is when you migrate your account to another instance, it would also migrates your posts in addition to your followers/following. There is a GitHub issue somewhere that explains why such an implementation is infeasible in Mastodon, but I don’t have time right now to find it. I believe it had to do with UUIDs, which seems a bit silly to me.
GNU social JP is a social network, courtesy of GNU social JP管理人. It runs on GNU social, version 2.0.2-dev, available under the GNU Affero General Public License.
All GNU social JP content and data are available under the Creative Commons Attribution 3.0 license.