I have a effort estimation related question. Which Stack Exchange site should I use?
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My take would be that like shopping recommendations, questions asking for an estimate for a programming project are not suitable on any of the sites. It's impossible to make a good estimate on anything without intimately knowing both the project, and the people who will do the work. This is by definition way too localized for a general Q&A site.
Questions about how to make an estimate - about methods, customs, and general pitfalls in estimating a project - may be suitable on Stack Overflow or - more often - the new programmers Stack Exchange site.