Free screen capture tool that has decent annotation I'm looking for a free screen capture tool that has decent annotation.  I want to be able to do the following:


Highlight an area
Dim everything but the selected area
Draw arrows
Blur selected areas
I just downloaded the Snagit Beta for Mac, free for now, I'm sure it will cost when it comes out of beta.  So far it has everything I was asking for except the dimming feature.  It has a few other nice features as well.