It contains the advice or opinions of one or more Wikipedia contributors. This page is not an encyclopedia article, nor is it one of Wikipedia's policies or guidelines, as it has not been thoroughly vetted by the community. Some essays represent widespread norms; others only represent minority viewpoints.
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The above is more than an arbitrary list of sites. Sister projects in the Wikimedia Foundation (WMF) are preferred. Failing that, sites should have their own Wikipedia article and meet some combination of the following criteria to be listed:
Policies consistent with the spirit of WMF goals
Allow content to be moved over verbatim (e.g., CC BY-SA-compatible or GFDL-compatible)