I am here to tell you that as a parent you DO NOT have to panic about your child getting access to adult content via the internet thru their Nintendo Wii. Here's the deal, you don't even have to have the thing connected to the internet to play games, and if you'd like to download some additional Nintendo approved content for your Wii it will not redirect you to an adult site. In fact, it won't even take you to the REAL internet. If you, as a parent, decide to down load the internet browser there are parent controls that will pop up and allow you to block sites.
BTW, it's a big box. You have to click past it to miss it.