The "what did you pick up this month?" threads got me thinking, what about a list where we can keep track of stuff we've ordered/pre-ordered, but haven't actually received yet?
Dunno about anyone else, but there are times where I've got several orders open, and it can get a little hazy remembering exactly what I bought. I suppose you could indicate "on order" or something in notes, but that would just get lost in the shuffle if you have a lot of games in your collection or wishlist. The site I use for movies, filmaf.com, does this and it's been especially helpful if something gets delayed, cancelled, or lost.