While you describe the technical approach, I think OP was asking "what is it? What does it do? Why would I care?" I can't really figure out the "Why would I ca

While you describe the technical approach, I think OP was asking "what is it? What does it do? Why would I care?" I can't really figure out the "Why would I care?" part from their website. I've been hearing them pop up a bunch. Just don't understand what they do.