Sorry that I can't remember which apps, but I think it was a Twitter client which Apple removed from their store and then came out with their own. Several apps they cannibalize into the OS.
Does Apple get a pass? Or do developers avoid writing apps for iOS just as they do for Twitter?
Seems like the field is a lot larger for iOS products, and that Apple wins either way (30% haircut on the app store), so maybe incentives for Apple are a bit more aligned then they are for twitter.
Which points to the fundamental thing twitter needs to do to get developers back on board: provide opportunities for both parties to make money. If Twitter was making a 30 cents every time a developer made 70 cents from the API, you can bet that that API would be protected and the developer respected.
