Right now there isn't much in the FAQ beyond the standard boiler plate, but I think that as we move though the beta we might want to expand it a bit with questions like the following:
It is a bit of a technical support question, but new users to the site might find it useful.
As mentioned in another comment thread, making a mention of rikai[chan|kun] will be really important for beginners who haven't heard of the tool and don't know much kanji.
I would add the advice:
Do not randomly accept or upvote an answer after only a few hours (sometimes a few minutes) just because the writer is particularly eloquent or has a high reputation. Leave the question open 1 day or more.
I've seen a lot of accepted or upvoted answers being either completely wrong or lacking a lot of details (1 or two sentences) as if the answerer did a 1 minute google search, picked up something that would fit as a quick answer and just posted his guess to be the first to get upvotes like it is a popularity contest. (oh and I've seen downvoted quality answers as well...)
