What product or service have you bought in the past that was a total waste of time and money? I have a kid, so there's lots of stuff there for which I paid handsomely but never used. Then there is the Sirius satellite radio that sits in the closet, unused and unusable. But I think for sheer money down the tube, i'm going with an Android tablet (computer) that I bought last year. I swear it has sat in my car for almost six months and I have never used it, have no desire to use it, and really don't know what I would use it for even if I got the urge. Total waste of money.