Need a plumber, or a tire swap? Amazon is ready to help. The internet giant has launched its promised Amazon Home Services, a one-stop shop that lets you order professionals in categories ranging from home maintenance to tech support -- there's even goat grazing, in case you need to clear an overgrown field. The offering promises to be more trustworthy than what you'd get just by searching the web or the phone book, since Amazon is relying on hand-picked pros that deliver up-front pricing. You also won't pay until the job is done properly, so workers shouldn't be tempted to cut corners.