(hey, this is mostly just intended for me to keep track of things I find interesting [or to call out things I find especially praiseworthy or grating], written from my gut - if you're not interested, you don't have to read it ☺)
Great information here, especially for Vista which tends to use more resources. This lets you set the shared desktop heap memory higher so that more windows can be open without those weird visual glitches (missing controls or menus, etc).