It's free signup day at MSN AdCenter, but you better fire up that ol IE browser you keep around for CSS compatibility testing, because they don't take Firefox:
MSN adCenter does not currently support the web browser you are using. Please sign in using Internet Explorer 6. More about system requirements
Earth to MSFT, Earth to MSFT: You are not the market leader here, you are not the monopoly. You have to try harder...
PS, MSFT: Correct punctuation is appreciated even in user-unfriendly error messages. A period please after "system requirements".
I think I want my $5 back.