The following thirteen(!) users:  <a href="">goingfullscheme</a>,  <a href="">valua_aint_no_galois</a>, <a href="">going-full-isomorphic</a>, <a href="">logicians_rule</a>, <a href="">martintzar</a>, 
<a href="">royalroadtogeometry</a>, <a href="">bundlist</a>, <a href="">compactbut</a>, <a href="">faptoint</a>, <a href="">you_dont_mess_with_ron</a>, <a href="">ron_is_striking_back</a>, <a href="">Emmy_to_Noether</a>, <a href="">commutative_drinker</a> (and, I believe, a couple more besides) have the following characteristics in common:

<li>They've all joined in the past few days.</li>
<li>Most have asked exactly one question and none has asked more than two</li>
<li>Their questions are closely related to each other</li>
<li>Their writing styles are very similar</li>
<li>After posting their questions, they never return to engage with commenters, or to acknowledge answers</li>

I think it is not too much of a leap to conjecture that these are all the same person.  

As far as I know, there's no actual rule against having fifteen different identities (or for that matter, a hundred, as seems likely if this keeps up at this rate for a few more weeks), and no actual rule against asking questions and then systematically ignoring responses, but I still find it troubling in ways that might or might not be entirely rational on my part.  Do others share my discomfort?