There is no need to yell. In the future people can make their own judgment. I mined for a day and was not paid. Its that simple. Nobody needs a signed messsge to pay coins out of a pool this is nonsense.
The message is not to get payment, it is to prove that you own that address. I expect there are many idiots trying to claim coins that don't belong to them. Hence the signed message. But if you would rather complain rather than take reasonable action that's up to you.