In Latin ubi means "where"; thus your whereness (i.e., the fact that you are in a definite place) is your ubiety and the state of being everywhere at once is called ubiquity. Note that on the Internet, the unit of ubiety is the URL because it denotes a precise location in that namespace.

For more on ubi, here's a neat article about the Mathematical Art of George W. Hart from Ubiquity the The Online Journal of the Ultranet: http://www.megafoundation.org/Ubiquity/SprUbiq01/GeorgeHart/sculpture.html