My understanding is that when a question is downvoted, the downvoter should provide a comment explaining why they downvoted and same with close votes (unless it is obvious). I follow this practice and always explain my negative votes unless it is patently obvious what the problem is.

Nevertheless, on this SE in particular (I participate in about 10 different SEs) I notice that both I and other people frequently get downvoted or closed with no explanation. A typical example is my question earlier today ([Can I run Linux on an Android table?][1])

(I also note in passing that on the first two pages of SU, there are 30 questions. Of these 30 questions, only a single one has an upvote, and one has a single downvote and the others all say zero. I don't want to start getting too meta on this, but I think to only award a single upvote to 30 questions, something is wrong here.)


  [1]: https://superuser.com/questions/1169701/can-i-run-linux-on-an-android-tablet/1169705?noredirect=1#comment1688809_1169705