<p>The migration dialog provides a short list of target sites.  These are the sites all users may choose as likely targets.  Because it's important to get along with other sites, it is crucial that all our users with vote-to-migrate privileges well understand the on-topic criteria at those sites.  For years the only options have been SO, Math, and our own Meta site (the one you're on now).  But we can change that.</p>

<p>Until DS (Data Science) graduated from Beta status last month, it wasn't possible to include it on the target list: beta sites aren't allowed.  This discussion therefore is timely.</p>

<p>This year we have migrated approximately 370 posts to other SE sites.  Of those, only three were to DS. We migrate (slightly) more frequently to Quantitative Finance and Open Data.  Other sites we migrate to (rarely) include Signal Processing, Physics, Academia, Economics, and Computer Science.  If DS is in the discussion, then so should these be.</p>

<p>Perhaps the best way to utilize those five default target options in the migration dialog would be periodically to review whither we migrate questions and put the top five targets into the default list.  (Roland, in a comment, makes an astute observation about "confirmation bias."  The implication is it's likely that whatever five targets we first include will become a self-perpetuating set of top five targets because the ease of migrating to them will automatically make them the most popular.)</p>
