This was a funny read on ODF interoperability. The ODF Alliance brings us a 'fact sheet' about the support for change tracking in Office SP2, and how that is 'broken'.
The opening paragraph states:
Putting millions of ODF files into circulation that are non-interoperable and incompatible with the ODF support provided by other vendors, however, is a recipe for fragmentation, effectively breaking open standards based interoperability on the desktop.
Take a second to let that sentence sink in a little.
The first part talks about being incompatible, not with the ODF standard, but with deficient ODF implementations provided by other vendors. Lol. That is silly.
The sentence then states that not following deficient implementations of ODF breaks open standards based interoperability.
That's a good spin. You break standards based interoperability by not implementing the unconformant features of other implementations.
Effectively, the ODF alliance states that this:
Is better than this:
Makes total sense to me. Who needs this hub and spokes model when you can eat spaghetti?