Well I have two games I play Wi-Fi over, this one and Call of Duty: World at War. An odd thing I found out is that both of these games first 4 digits in my FC start with 1891. Even wierder, CoD doesn't have dashes in between lines (it'd look like 1891******** instead of AC: CF's 1891-****-****) so the Wii possibly couldn't have remembered it. I mean, the rest of the friend code is different but both have 1891 in them. 
