A common response to many questions on Stack Exchange sites is along the lines of, "This question belongs on [another.stackexchangesite.com]." Hopefully it's phrased nicely, etc., but that's appropriate feedback in order to keep the sites on-topic and effective.
However, it can be challenging, especially for newer users, to know where to ask their question, as there are so many different Stack Exchange sites, often with seemingly overlapping (or at least somewhat closely-related) purposes and scope definitions. Also, each site has a fairly specific definition explaining what is on-topic and what is not; however, for users who aren't experienced with many of the different SE sites, it's a lot to ask for them to read and become adequately familiar with every different scope definition that might apply to their questions or interests.
Is there some quick-and-easy way for users to quickly identify which site would be best for presenting their question? If not, would it be helpful to have a "sticky question" of sorts here on Meta SE, for example, that helps people quickly sort out where to go to ask their specific question?