Also, versioning APIs sucks. It’s not that it’s hard, it’s that once you publish an API, you pretty much have to support it forever. This is especially true when your API is being consumed through multiple layers. I can’t force game developers to upgrade, because they can’t force their users to upgrade. The lesson here is simple, if you don’t have to make something public, don’t!

Karl Seguin - What I Learned Building Mogade