[pferde]

To be fair, this is somewhat inevitable in the initial stages, before a reasonable spec is released. Many people, like me, are just "sitting on the fence" and test-driving Matrix via their matrix.org server, until there are reasonable assurances that deploying our own Matrix server will come without too much hassle.

After Synapse 1.0 is released (sometimes next month, IIRC), I'm definitely deploying my own homeserver, and federating it with the rest of the world.

[majewsky]

FWIW, I've been running Synapse since 0.20 or so (for at least 2 years now), and there has never been a breaking change in the protocol as far as I'm aware. I had to read release notes at some points to get the upgrade to work, but it was mostly Python-library-related stuff IIRC.