Answer:
A mechanism to discover who is following you.
What do you call a witch that lives in the sand?
It is a symphony of noise, It can produce both grief and joys, It is inspiring and grand, Made by a person or a band.
This is the main ingredient in spaghetti and Mac-N-Cheese.
Which one of Santa's reindeer can be seen on Valentines day?
If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?