now people uses the 6 mega pixel cameras and when they take a pic they put it on the background. it slows down the computer. the best wallpapers are the sold colors and the images with not a high resolution like the Windows it self wallpapers.
about the icon:
i actually have just my D:\ , firefox, iTunes. and the recycle bin.
if you have just shorcuts then its ok but no big files download from internet like .rar and exe files.