i dont forget i have albums really; there are times when i dont know what i'm in the mood for so i browse, and that's when i forget i have an album that would be perfect for my mood (which is usually settled because i saw something else first). the order of my collection switches with what i feel like doing at the time; not all of my organization attempts have been successful.
im usually the laziest about putting the new, recently acquired albums i buy into the shelves. they normally lay about the house like coasters, staying wherever i left them when i was reading the liner notes/lyrics.