Twitter Plans to Choke Access to Apps It Doesn’t Approve - Liz Gannes - Social - AllThingsD

A classic case study in realties at the intersection of "open platform" and viable business model

"Twitter isn’t going to shut off applications that it doesn’t like, but it will restrict their access to new users.
The company today issued a detailed guide to coming changes to its platform, including lower rate limits and authentication and certification requirements.
Most importantly, Twitter said it will require large applications to get direct approval, or else."

Twitter Plans to Choke Access to Apps It Doesn’t Approve - Liz Gannes - Social - AllThingsD