Warning: Do not link the market to SD using Link2SD. I recently went back to my backup of my stock OS and I had moved virtually everything to SD using Link2SD, as such I have no market, no file explorer, nothing of any use. If I had the market I could download all of my apps again and get the phone working easily. If something were to happen to your SD card or one of the partitions you'd be in the same boat I am. The space recovered from moving the market isn't worth it. Just leave it where it is. Since I can never find the tutorial I wrote, I am starting it's own thread.