Well, you should read the bit that says 'You have messages' on wikipedia, it explains it, I get that all the time.
"This IP address, is registered to America Online (AOL) and is shared by multiple users. Comments left on this page may be received by other users of this IP and appear to be irrelevant. Caution should be used when blocking this IP or reverting its contributions without checking.
If you are an unregistered user operating from this address, note that this is not the IP address of your machine. This is the IP address of a proxy server that communicates between your browser and the Wikimedia servers. These and other proxies are shared among thousands of AOL users. If you are frustrated by irrelevant comments appearing here, you can avoid them by creating an account for yourself.
Please note: AOL users often change IP addresses with each page they load.
Warnings or messages left on this page will not likely be received by the intended user.
Please scroll down to the bottom of this page to see the most recent messages."