Question

I know that when the main method is running and the only other threads that are running are background threads then the application exits. Other than delaying program termination or not, does a backgrounded thread do anything differently or respond differently than a non-backgrounded thread?

Answer 1

No, they are identical to normal threads except they don’t prevent a process from terminating.

From MSDN:

Background threads are identical to
foreground threads, except that
background threads do not prevent a
process from terminating.