<p>For instance, <a href="https://stats.stackexchange.com/review/close/181831">this question</a> asks about why R and SAS give different results in a multi-level model. I think this sort of question is more likely to get an answer here than elsewhere. R list users may not know SAS; SAS users may not know R; programmers may not know about multilevel models. </p>

<p>What do others think?</p>
