Grammatically, "Fix it, it's broken" is incorrect. The correct punctuation is a semi-colon, not a comma (splice). Alternatively, you could use a colon ("Fix it:

Grammatically, "Fix it, it's broken" is incorrect. The correct punctuation is a semi-colon, not a comma (splice). Alternatively, you could use a colon ("Fix it: it's broken") or conjunction (e.g., "Fix it, as it's broken"). Anyhow, for hackers, "broken" and "fix it" are redundant. Also, people occasionally use "Tell HN:" but almost never "HN:". That's probably why it was edited.