Getting stuck following debian on flash tutorial

Somehow I managed to get through it (i think) even though it didnt go anything like the tutorial found here:
http://www.plugcomputer.org/plugwiki/index.php/Installing_Debian_To_Flash

root@debian:~# uname -a Linux debian 2.6.35.4 #1 PREEMPT Thu Aug 26 22:11:15 MDT 2010 armv5tel GNU/Linux

Now i'm just a little confused on the output of df. it looks like I have two root file systems? Can anyone help?

root@debian:~# df -h rootfs 462M 349M 109M 77% / ubi0:rootfs 462M 349M 109M 77% / tmpfs 251M 0 251M 0% /lib/init/rw tmpfs 10M 128K 9.9M 2% /dev tmpfs 251M 0 251M 0% /dev/shm tmpfs 1.0M 48K 976K 5% /var/run tmpfs 1.0M 20K 1004K 2% /var/lock tmpfs 251M 0 251M 0% /tmp

root@debian:~# cat /etc/mtab rootfs / rootfs rw 0 0 ubi0:rootfs / ubifs rw,noatime 0 0 tmpfs /lib/init/rw tmpfs rw,nosuid,relatime,mode=755 0 0 proc /proc proc rw,nosuid,nodev,noexec,relatime 0 0 sysfs /sys sysfs rw,nosuid,nodev,noexec,relatime 0 0 tmpfs /dev tmpfs rw,relatime,size=10240k,mode=755 0 0 tmpfs /dev/shm tmpfs rw,nosuid,nodev,relatime 0 0 devpts /dev/pts devpts rw,nosuid,noexec,relatime,gid=5,mode=620 0 0 tmpfs /var/run tmpfs rw,nosuid,relatime,size=1024k,mode=755 0 0 tmpfs /var/lock tmpfs rw,nosuid,nodev,noexec,relatime,size=1024k 0 0 tmpfs /tmp tmpfs rw,nosuid,nodev,relatime 0 0

root@debian:~# cat /etc/fstab # /etc/fstab: static file system information. # <file system> <mount point> <type> <options> <dump> <pass> /dev/root / ubifs defaults,noatime,rw 0 0 tmpfs /var/run tmpfs size=1M,rw,nosuid,mode=0755 0 0 tmpfs /var/lock tmpfs size=1M,rw,noexec,nosuid,nodev,mode=1777 0 0 tmpfs /tmp tmpfs defaults,nosuid,nodev 0 0

Also, now that I have debian on flash, how can i use my SD card for storage of binaries I compile that would usually go in /usr/local ?