This is an addon that adds CombatFeedback to the oUF unitframes.

It will display +100 on the frame when someone gets healed for 100 and -100 when someone gets damaged.
It will also display block, miss etc.

To use this in your oUF layout you will need a CombatFeedbackText member on your oUF unit object (self):

	local cbft = self:CreateFontString(nil, "OVERLAY")
	cbft:SetPoint("CENTER", self, "CENTER")
	cbft:SetFontObject(GameFontNormal)
	self.CombatFeedbackText = cbft

The combattext fades in and out when the damage happens, you can control the fading by setting the .maxAlpha member
on the CombatFeedbackText string:

	self.CombatFeedbackText.maxAlpha = .8
	
The default value is .6

Enjoy

-Ammo