A friend of mine was lamenting that all the outlets in his house were installed 'upside down'. That is, with the safety ground pin on top, rather than on the bottom. This means that some of the things that one plugs in have the cord aiming upwards, before dropping to the floor.
The strange thing is that I went to the Leviton and Hubbell web sites, and a number their photos of outlets show the safety ground pin oriented the same way - on top. Color me confused. Why would the web sites orient their pictures the "wrong" way?