The Wii Shop channel is the place Nintendo created to buy/download official software from the internet directly to your Wii. You can download lots of different content for your Wii, this includes new channels and virtual console games. You have to pay for all virtual console-games, you do this by either buying a points card in your game-store, or by entering your credit-card into the channel. Mostly channels are available for free download, this includes Check Mii Out
! channel, Everybody Votes channel, and the Internet Channel.
In order to use the Wii Shop channel, you have to configure your Wii's connection settings.
It uses a secure connection to the servers, so we cannot sniff it. In previous versions of the channel, the connection wasn't secured, read more about those findings at http://Mozy.org/wii. Please note that these are outdated, and may have changed in newer versions.