> But more to the point, 'vulns' seems like a very unnatural abbreviation. I would go with v11n (similar to i18n).
Please no. I really don't like that convention and would rather you just type out the whole word if that's the alternative. Worse yet, for some reason you've decided to end in `n` rather than `y`.
How can you dismiss the first four letters as an "unnatural" abbreviation, and then suggest inserting digits to represent the number of characters removed as an alternative? I'm not following that logic at all.
In one on one or small group conversations, I say I don't know all the time.
In one to many conversations like a thread on Hacker News, why would I say "I don't know" unless I'm specifically addressed or have a side point to make? It's noise, and doesn't help anyone.
They started the fight, and I think it's safe to say they knew what they were getting into.