This morning, my neighbor was over while I was putting in the electrical outlets in the new shop (that story will be in shop tours shortly) and asked me why I was putting in the electrical outlets upside down. I never really thought about it, but I've always put the ground plug up when I install outlets. Back in high school when I was planning on being an electrician, I was working part time with an electrical contractor and he always put the outlets with the ground facing up. I just kept doing it that way because he did, not because he told me that had to go that way.
Other than appearance is there a reason why they should go one way or the other? Which way does everybody else install them?