What is the smallest possible valid PDF?
Can anyone explain to me why PDF persists as the most common document format for "official" correspondence? It's absolute dog-vomit of a format, just unbelievably overwrought and unfriendly. I wince every time I have to sign one, or, god forbid, actually fill in some form.<p>Is the explanation really as lame as "They were there first and it stuck"?