...
* Rewards points are ~1%.
* Using bitcoin at gyft.com gives you 3%.
Winner: BITCOIN.
And how many percent did Bitcoin fall JUST TODAY?

Saved for future reference.
You need a hand with the math?
Your statement was presumed to be a declarative prediction of future price. Your data set is too small to make a statistical prediction. What math are you referring to?
My statement was not, and is not a "a declarative prediction" of anything, including the price. It was a question, obviated by the squiggly line over a dot, known as
the question mark. I'm beginning to understand why you're in this thread.
Now I need to get some rest.
Tomorrow we'll start getting into shapes and colors.
Good nigt.
The reason businesses give discount for bitcoin purchases is because they are saving on not only the credit card processing fees, but also the chargeback loss. It makes good fiscal sense to accept bitcoins. Using services like Bitpay, they don't even need to use Bitcoin for more than a payment system.