I use two spaces for manual indentation in Perl, and to continue a block of information in my own todo lists which are ascii, two newlines separating each block. It prints well and looks sane to me..

I use XEmacs which seems to get it right, tab eq 2 spaces. Personally I just find it to be the right amount, it generally leaves me enough room for short comments on the same line even when nested.

I learned curlies from Niklaus & Wurth but forget what they said.. I use

if (true) {
  woop;
} else {
  werp;
}

..Vertical real estate is important too. The real holy war is, how do you line up long || statements (over 2 lines for me)..

if (   (longthing > foo)
    || (anotherthing < moo)
    || (boo)                 ) {
  werp;
}
[download]

Right??!?!?!? (smiling like jack n. in the shining) hee hee hah hah ahaha ahaa!!