daphotron

// FLEXIBLE 3 COL ====================
$em-base: 16px;
$bp-widest: 900px/$em-base + 0em;
$bp-wide: 700px/$em-base + 0em;

.span3 {
  display: block;
  @media (min-width: $bp-wide) {
    // 2 col

daphotron

$color-border-soft: #ccc;

// padding and margin
$space_sizes:
  (l, 2em),    //large
  (m, 1.5em),  //medium
  (d, 1em),  //default
  (s, 0.5em),  //small
  (xs, 0.25em) //x-small

jbenet

a simple git branching model (written in 2013)

This is a very simple git workflow. It (and variants) is in use by many people. I settled on it after using it very effectively at Athena. GitHub does something similar; Zach Holman mentioned it in this talk.

Update: Woah, thanks for all the attention. Didn't expect this simple rant to get popular.