Less Wrong is extremely intimidating to newcomers and as pointed out by Academian something that would help is a document in FAQ form intended for newcomers. Later we can decide how to best deliver that document to new Less Wrongers, but for now we can edit the existing (narrow) FAQ to make the site less scary and the standards more evident.
Go ahead and make bold edits to the FAQ wiki page or use this post to discuss possible FAQs and answers in agonizing detail.
It's a reference - a serious tone is appropriate for people jumping in to quickly find small amounts of data.
In a "Quick-Start Guide" or the like*, a bit of levity would be appropriate.
* I have a file on my hard disk which was supposed to become this, but hasn't been touched since March.