I have an 8G SDHC Card that I want to use mainly for back up my work folder and don't expect to share in other non-Linux environment. Since I often use links for files within the work folder, I want to use a file system that supports such.Is ext{2,3,4} a good idea given that it does not have 512 block size. Is there any other FS that's good for SD card? Does it really matter if the file system block size is 512bytes?