ExpandBy default, the Start screen fills your monitor up with as many rows of tiles as it
can fit, up to 6 rows. If you'd like to lower that number—maybe you have a
particularly cool background, or your groups just aren't that big—you can tweak
this number by editing the Registry. Unfortunately, this doesn't seem to let you
pack more tiles onto smaller monitors, but it's a cool little tweak if you want to
give your Start screen a more minimal look.
