I visit a members profile. I go to the forum. When I look at Whose Online, it shows that a "guest" with a DIFFERENT IP address looked at the member profile 3 minutes ago, and it records ME, with my username, as being on the forum home, (which is actually correct).
I know no-one else has looked at this member's profile....
Here's a screenshot (would be so nice if instead of saying "IP" on the right, if you have permissions to view IP, it would just show you the darned IP. One less click, please! (I requested this in a diff forum, with no reply like a month ago)