Please stop. Plugging in my iPod is not an appropriate time for you to be plugging MobileMe. iTunes should never display an ad when I sync my device.
Never mind that I’m already a .Mac user and you damn well know it; I just haven’t enabled it on my iPod Touch, because the sync is still broken and your servers go offline at random intervals. I don’t want to hose my email, bookmarks, calendar, and contacts by syncing them through an unreliable service.
[speaking of which, plugging in an iPod Touch does not trigger a sync; you have to hit the button manually. WTF?]