But he asked if there was a way to tell if his buddy was online. I think once they swap friends codes, he can tell if they are online. That was what I understood from watching a demo of a developer playing Mario Strikers online. It looked like he pulled up a list of his friends and it said if they were online or not.
Again, this was just from watching a video, so I could be mistaken. We need someone from the UK who has Strikers and has played it online to verify.