Make sure you backup your NM portal data, whether by email or external storage. I just did a system restore and totally forgot about my data, now its all gone. On one hand I'm glad I only put 52 items worth into it on the new profile, and not 100+. On the other hand, THOSE 52 ITEMS TOOK TIME, UGH! There's no way I'll remember what I bought them all for, which is pretty crucial if I want to systematically drop prices and still turn profit above a minimum. And I won't be able to track actual profits I made of them. :| backup your data, kids.