This is getting to be ridiculous (if the story is true). This use case of finding friends wasn't part of the Forbidden Twitter Quadrant, the one containing clients and apps like Favstar. In fact, they encouraged this kind of use at their developer event I attended last year, and of course they would, it strengthens the value of their network. I have been planning this kind of integration myself, but it's beginning to feel like Twitter wants to become a completely isolated silo.
I can only hope a mistake was made here as it sounds so absurd.
Twitter is a company that is in the business of making money.
They are nominal value for themselves when they let third parties import their entire graph and providing incredible value for the importers.
This is a 100% rational business decision. If Twitter didn't offer friend finding on 3rd party networks before, it would be a bad business decision if they up and did it today.
No one will stop using Twitter because they can't use it to connect with their friends on another service.
I can only hope a mistake was made here as it sounds so absurd.