читайте хоть лицензионное соглашение перед тем как пользоваться даже твиттером
Our Services evolve constantly. As such, the Services may change from time to time, at our discretion. We may stop (permanently or temporarily) providing the Services or any features within the Services to you or to users generally. We also retain the right to create limits on use and storage at our sole discretion at any time. We may also remove or refuse to distribute any Content on the Services, limit distribution or visibility of any Content on the service, suspend or terminate users, and reclaim usernames without liability to you.