[logn]

I agree. It takes a lot of effort to run HN, so allowing YC companies to post ads justifies the cost. I'd prefer YC-only ads as I think it would be too spammy for anyone to advertise. This makes it a nicer perk for the YC companies too.

Also, regarding no commenting on job ads, I think this is better for HN. Otherwise, the attention of HN is thrown into threads that are promotional spots.

I think another benefit of HN is that YC keeps its name relevant to a great many potential entrepreneurs.