capriuni: Well, what sort of answer are you looking for?
elsaf: Well, they're good for telling different components apart, even when said components have the same IP address. Watch out for components manufactured by fly-by-night companies because sometimes they reuse the same ones over and over. Not good.
Oh, and in the weather department, we've got snow - woohoo! Supposed to turn icy & shitty by the morning, which might mean a snow day. That would be nice. :-) (Well, the ice isn't nice, but snow days are!)
Oh, be sure to ask your questions here!