Hey guys, long time no see! I am *the* Knoxximus who wrote the FAQ. I hope you guys find it somewhat useful!
And yeah, my 2GB card sucked HARD...the important thing is that you can eventually realize the full potential of a 4GB SD.
And yes, if you filled it with photos, you could view them in the Photo Channel. If you filled it with music, you could use those in games that support custom soundtracks.
And as long as you make a quick backup of your card whenever you adjust something, you should be fine.
I also updated the thread with a program where you can custom make a blank file whatever size you need to cut down the time it takes to maximize your card! ^_^