[1337p337]

I follow, but how can one tell from looking? There is a convenient "[pdf]" tag when a link is a PDF, but no indicator besides missing controls that there is some special arrangement for job postings. I had to check the web to find out that Optimizely is YC-funded, and I had no idea YC jobs had special promotion on HN until I found this post. It's a slightly shady thing to do without any obvious indicator of what's going on.

[t0tltjavlamrkr]

Check the jobs link at the top and also notice that you can't vote for it / no arrow; therefore it's a jobs posting, which are exclusive to YC companies.