By the way, how do you find the IP addresses?
Click
the link 
I would have thought that ONLY admins would have been able to see that kind of information... any member can find that kind of information?
It's meant to check if your account is compromised: compromised accounts have been used to scam through PM, without changing the password so without drawing any attention to it being compromised.
See
theymos' post about it.
Oh? I was confused about being able to see my IP addresses, and initially I was thinking that when you sent me that link, you were able to see the contents of the page that I saw when I clicked the link (which was my IP addresses of the last 30 days)..