Im just posting this for everyone who hasnt heard or experienced the problem with Third Party Memory Cards for the Gamecube.
People have been getting them stuck inside their Gamecube card slots and having a hard time and even in some cases ruining the slot. Third party cards were designed AFTER the gc came out so they got them to fit perfectly - but the Wii is slightly different and many of them do not fit so well. This in end can damage your memory card slots prohibiting them from use.
Luckily some DO work tho, my Madcatz 16x Memory card works fine, comes in and out 98% the same as the normal one (slightly better i think). But you should really check on the web to see if your card actually fits or not, or you could end up busting the card and the slot with a test.
Its best not to use them at all now, to avoid damaging something. But its up the the person i geuss.
If anyone knows which Third Party cards do and Dont work with the Wii, posting them here would be greatly appreciated.
List of Ones that WORK: (this is heresay, try at your OWN RISK)
Logic3 16mb card
'sector 7' 8 mb
List of Cards that DONT WORK: