Why did ReadItLater feel that they needed to get their hands dirty and intervene?
Now I have to use Instapaper.. sigh
It is an interesting question. I mean, Reeder was clearly cloned pretty heavily, but kneecaping interoperability in retaliation seems like a dangerous road to head down.
These bookmarking services weren't cutting off a developer client to protect themselves, which I consider more dangerous. They were throwing their weight behind Reeder.
Checks and balances.