[Perceptes]

This works for me in OS X's built-in Terminal app, but not iTerm. Both report xterm-256color as $TERM, so I'm not sure what about iTerm is configured differently to prevent it from working there.

[thechriswalker]

iTerm2 has an option in your Profile: Text tab > Text Rendering: "Blinking Text Allowed"

Off by default; enable and blink like its 1989.

[awendt]

same here