Know of any web sites for using the unsharpen mask in adobe photoshop?

Answer 1

I'm not sure what you're asking. I used to use it all the time when I worked for the Golf Warehouse. If you don't know already, its purpose is to enhance the contast so smaller, lower res pics will look a little crisper, although it's an optical illusion. The brush works a little better since you can control the ares that are affected.