From: Thomas Scroggs <trscrogg@unity.ncsu.edu>

But Urd travels through television.
Belldandy through mirrors.
and Skuld through hot water.

water, cold or hot, doesn't matter.
(e.g. Meet me by the Seashore, Skuld reaches the three sister's rock via
crossing the ocean/sea...which, at last I heard, never becomes hot
(especially at night))