Given the barrage of downvotes because I could not find something on meta that apparently everyone thought I should know, I would like to mention what I see is a serious disconnect in the organization of documentation on SO from what is intuitive.
First, the only form of documentation on SO is a FAQ. FAQ as the sole form of documentation is sorely inadequate. Q&A (of which a FAQ is variant) is not the same as a book and one form cannot replace the other. Wikis for example, are not laid out in a Q&A fashion. SO really needs a site that outlines, for example the current rules (and all the rules) with respect to Reputation. There are many questions on meta about reputation but the algorithm has evolved over time and there is no easy place to get that answer. Similarly, getting to information on bounties is really buried which brings me to my next point.
The usability of the FAQ is awful unless your question solely relates to the 15 questions they list. For example, let's say you are trying to determine when a bounty is subtracted from your reputation (the question whose answer everyone thought I should know). Go to the SO FAQ page and notice there is nothing on the right panel of questions related to bounties. Do a search, in your browser, for "bounty". Nothing, go fish. Under questions? Go fish. Under reputation? Go fish. What if I don't get a good answer? Huzah! However, there is nothing that indicates that the moment the bounty is opened that the bounty amount is subtracted from their reputation (only that it eventually will be subtracted). Now the user has to go to fish on meta. That brings me to the third point.
It is counter-intuitive to be required to navigate to an entirely different site for documentation on the site you left. Most people assume meta is for people asking questions about designing a SE site not general questions that they would have found in documentation had it existed in a Wiki form.
Meta does not work well IMO as documentation nor is it designed to be that. It is designed as Q&A. However, many questions could be avoided if there was an actual documentation store like a wiki (Not a FAQ. Not Q&A). One reason for that is that questions are asked over time and the "right" answer changes over time (e.g. Reputation algorithm, daily cap algorithm). It is cumbersome to find the last "correct" answer.
So, SO really needs a wiki and more importantly they need to keep it current so that it is versioned along with the site.