Some say I'm their worst enemy,
Some say I'm their best friend.
Some use me in brevity,
You'll still pay for what I lend.
There's proof that I can even kill,
Too many take that path.
There's claim also that I can heal,
You'll have to do the math.
Yes, uses for me do abound,
You'll see me often, look around.
What am I ?
Answer will be provided next Thursday evening after 21:00.
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