Maybe if there was actually a riddle written by OP or not found on the net, it wouldn't be that easy to answer. GOOGLE is the answer.
Number 9: The person who makes it, sells it. The person who buys it never uses it and the person who uses it doesn't know they are. What is it?
If you break me I do not stop working, If you touch me I may be snared, If you lose me Nothing will matter.
I give you a group of three. One is sitting down, and will never get up. The second eats as much as is given to him, yet is always hungry. The third goes away and never returns.
I like that answer. But it's wrong I drift forever with the current down these long canals they've made Tame, yet wild, I run elusive Multitasking to your aid. Before I came, the world was darker Colder, sometimes, rougher, true But though I might make living easy, I'm good at killing people too.