I am one of those users who welcome (at least the experiment) of broadening news.yc to "Hacker News." However, if the last few days of postings are any prediction of the next n, then perhaps some Hacker News Posting Guidelines would be in order. I think that there should be a link to them on the Submit Link page because new posters won't know (and old posters may forget) that the Hacker News announcement even exists. PG's "anything that gratifies one's intellectual curiosity" maybe a good start, but I just don't think it is enough. My suggestion would be to add:
No politics.
No old stuff.
If you post a question, post 1 not >1.
What else?
"Hacker News Posting Guidelines?"
We need _some_ posting guidelines.
We need a spell checker, at least for titles (there is a typo in this very topic).
We need _some_ moderation. (For me quality is more important than democracy).
We need a section "Hacker's classic readings" (books, articles, essays).
We need to calm down :).