Ask HN: Why can't I submit a job posting to the August 2013 job threads?

Why can't I submit a job posting to the August 2013 job threads?

Are they too old or just I don't have appropriate karma or permissions?

Threads in question: https://news.ycombinator.com/item?id=6139927 https://news.ycombinator.com/item?id=6139937