Video of the Wii SD loader!
How to run games from SD card!
A while ago, Marcan did a provocation to Waninkoko: coding a way to load (pirated) games from USB drives in just 6 hours.
Ha ha, Waninkoko has replied, he has coded a way to load (pirated) games from SD card in just 2 hours!
Here is the video:
But, he would not release this program. Probably this is due that his loaders use a proprietary file system (WBFS), so loading games from an SD card would be unfomfortable, requiring a switch every times. An USB loader is WAY batter! An 1TB hdd and then.. hahaha. Soon i will publish an how to on the usb loader 
UPDATE: The SD loader has been released! You can download it from Waninkoko's blog.