[quote name='mykevermin']I like that my Wii glows when it has to tell me something, like a system update or a new channel has launched.
I hate that, recently, my Wii glows when it wants to tell me about a "Check Mii Out" contest. It's done so 3-4 times at least.
Is there a way to keep the former or prevent the latter, or will I have to choose between two different kinds of inconvenience?[/quote]
You can opt out of the 'Check Mii Out' messages. There's surely a way to do it form the 'CMO' menu, but yo can also do it directly from the messages they send. Go to one of the 'CMO' messages, and there should be a button in the top-right corner. One of the options is 'opt out of CMO' messages. So, yes, you can opt-out of JUST those. (PS: in fact, they gave you that option when you signed up for the channel, too)
I turned mine off, too... I don't feel right leaving the blue light blinking, and I hate having to turn it on for something I couldn't care less about.