Why should I use multiple workers?

Question

Why should I use multiple workers for different computers? In which case should I create another worker?

Answer 1

You should use multiple workers if you want separate statistics for them, or if the pool you are using limits the number of connections that are allowed per worker.

Answer 2

You have to create a worker per machine.

This way, the mining pool will be able to track each system's contribution to the work being done.