While the concept of an "API restriction" may not sound dramatic, this latest change has users once again worried about Twitter's future.

What is an API? The meaning of API is Application Programming Interface, it is an interface that allows you to connect the database of a service with another application.

It's not unusual for a platform as big as Twitter to have an API that's accessible to the public, as it provides more ways for people to use the platform -- a relationship that can be beneficial ...