We have 4 computers in our house that are always turned on. Never experienced any trouble, but you may be right that the electrical bills are getting big because of this. Then again, since I live in the utterly cold place known as Norway, the heat generated by the PCs is often very welcome :-)For me it is a matter of convenience. I check mail/news many times a day; when I wake up, when I et home from university and many other small occasions when time is critical :)I believe the future is a PC that conserves energy, in that it is so fast that it can boot in a second or so. I guess we will need this if the planet is supposed to sustain "everyone" having their own PC.