It's a status quo. The reason people are posting jobs here is because of the community and the select group of people participating. But if you create a YC Jo

It's a status quo. The reason people are posting jobs here is because of the community and the select group of people participating. But if you create a YC Job Board then you loose the community and you increase the audience of the postings to be much much larger and outside of the original target audience (eg: just think of all the job board aggregators, the jobs would end up on, etc).