This is [the original Help Center][1] page, with some minor changes.  It turns out that most of the Off-Topic subjects are already covered here, so I just added a couple of new ones to cover the missing cases:

 - where to find a software library, tool or other resource
 - a product or service recommendation

**UPDATE:** Removed "Freelancing and Business Concerns" from the on-topic list.

**UPDATE 2** Removed "software engineering" in favor of more specific topics, many of which were already included.

> What topics can I ask about here?
> ---------------------------------
> 
> <p>Programmers Stack Exchange is a site for professional programmers
> who are interested in getting expert answers on conceptual questions
> about software development.</p>
> 
> ###If you have a question about...
> 
> <ul> <li>software requirements</li> <li>software architecture and design</li> <li>algorithm and data structure concepts</li> <li>development
> methodologies, processes, and methods</li> <li>software engineering management and economics</li>
> <li>quality assurance and testing</li> <li>software licensing</li> </ul>
> 
> <h3>and it is not about...</h3>
> 
> <ul> <li>general workplace issues, office politics, résumé help (check
> out <a href="http://workplace.stackexchange.com/">The Workplace</a>
> instead),</li> <li>implementation issues or programming tools (ask on
> <a href="http://www.stackoverflow.com/">Stack Overflow</a>
> instead),</li> <li>what language/technology you should learn next,
> including <a
> href="http://blog.stackoverflow.com/2011/08/gorilla-vs-shark/">which
> technology is better</a>,</li> <li>what project you should do
> next,</li> <li>what book you should read next,</li> <li>where to find
> a software library, tool or other resource</li> <li>a  product
> or service recommendation</li> <li><a
> href="http://meta.programmers.stackexchange.com/questions/588/are-career-advice-questions-useful-to-anyone-except-the-poster/590#590">career
> advice</a>, salary or compensation,</li> <li>personal lifestyle,
> including relationships, and non-programming activities</li> </ul>
> 
> <p>...then you're in the right place to ask your question!</p>
> 
> <p>Please make sure your question uniquely applies to programmers in
> general:</p>
> 
> <p><img src="http://i.stack.imgur.com/ociNc.png" alt="proper scope for
> question"></p>
> 
> <h2>What about subjective questions?</h2>
> 
> <p>Subjective questions are allowed, but subjective does not mean
> &ldquo;anything goes&rdquo;. <strong>Please keep it professional at
> all times</strong>. If this is a question you'd be uncomfortable
> discussing with your colleagues in a work environment, it's probably
> not appropriate here, either.</p>
> 
> <p>All subjective questions are expected to be <em>constructive</em>.
> How do we define that?  Constructive subjective questions &hellip;</p>
> 
> <ul> <li>inspire answers that explain “why” and “how”.</li> <li>tend
> to have long, not short, answers.</li> <li>have a constructive, fair,
> and impartial tone.</li> <li>invite sharing experiences over
> opinions.</li> <li>insist that opinion be backed up with facts and
> references.</li> <li>are more than just mindless social fun.</li>
> </ul>
> 
> <p>Questions that do not meet enough of these six guidelines will be
> closed as "Not Constructive". Please see the <a
> href="http://blog.stackoverflow.com/2010/09/good-subjective-bad-subjective">Good
> Subjective, Bad Subjective</a> and <a
> href="http://blog.stackoverflow.com/2011/01/real-questions-have-answers/">Real
> Questions Have Answers</a> blog posts for more details and
> examples.</p>
> 
> <p>Please <a href="/search">look around</a> to see if your question
> has been asked before. It’s also OK to <a
> href="/helpcenter/self-answer">ask and answer your own
> question</a>.</p>
> 
> <p>If your question is not specifically on-topic for Programmers Stack
> Exchange, it may be on topic for <a
> href="http://stackexchange.com/sites">another Stack Exchange site</a>.
> If no site currently exists that will accept your question, you may <a
> href="http://area51.stackexchange.com/faq">commit to</a> or <a
> href="http://meta.stackoverflow.com/questions/76974/how-can-i-propose-a-new-site">propose</a>
> a new site at <a href="http://area51.stackexchange.com/">Area51</a>,
> the place where new Stack Exchange communities are democratically
> created.</p>


  [1]: http://programmers.stackexchange.com/help/on-topic