I can't imagine renting a computer that I'm going to be working on myself. I just wouldn't trust that it hadn't been tampered with or is recording my keystrokes, etc. I have multiple computers, so if I had to send one in for repair, I wouldn't really need a rental. I do work for a company that does electronic testing and we often rent computers for testing events. (Cisco Live, TechED, etc...) Our software only runs on Windows, so we don't need macs, however they do have those available as well. I could see people renting them in quantity for events, training, etc.. but I don't see where someone would rent one for personal use. Good luck with your venture. I tried your survey, but it kept getting stuck. The progress bar was all over the place too.