Hello everyone. I've heard of people using surge protectors for they're electrical equipment. I'm thinking about buying one for my iMac when I get it as I don't want it to be damaged. What does a surge protector actually protect against? Power cuts? If this is true then how come our TV, PC and loads of other electrical equipment around the house have been through loads of power cuts and storms and have not been damaged in any way? I know that they don't cost much but I'm just wondering if I actually need one or if they are just a way of companies earning money selling pointless things that they claim are vital.