Using the tracking skill to look for players will not reveal a player if you are standing in the same tile as the other player. Not a big deal, but I thought I would share.
I was going to post about this as well, but then I was considering that, well, how could you not notice or find someone on the same tile? I mean, no one can stealth onto your tile without pushing into you and revealing, so I brushed it off as something that is like nil chance of having any impact in the field.